/* Test of POSIX compatible vsnprintf() and snprintf() functions.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007-2009 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
-/* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0. */
-#ifdef __DECC
-static double
-NaN ()
+#include "nan.h"
+
+/* The SGI MIPS floating-point format does not distinguish 0.0 and -0.0. */
+static int
+have_minus_zero ()
{
- static double zero = 0.0;
- return zero / zero;
+ static double plus_zero = 0.0;
+ double minus_zero = - plus_zero;
+ return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
}
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
+ So we use -zerod instead. */
+double zerod = 0.0;
+
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+ So we use minus_zerol instead.
+ IRIX cc can't put -0.0L into .data, but can compute at runtime.
+ Note that the expression -LDBL_MIN * LDBL_MIN does not work on other
+ platforms, such as when cross-compiling to PowerPC on MacOS X 10.5. */
+#if defined __hpux || defined __sgi
+static long double
+compute_minus_zerol (void)
+{
+ return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zerol compute_minus_zerol ()
#else
-# define NaN() (0.0 / 0.0)
+long double minus_zerol = -0.0L;
+#endif
+
+/* Representation of an 80-bit 'long double' as an initializer for a sequence
+ of 'unsigned int' words. */
+#ifdef WORDS_BIGENDIAN
+# define LDBL80_WORDS(exponent,manthi,mantlo) \
+ { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \
+ ((unsigned int) (manthi) << 16) | (unsigned int) (mantlo) >> 16), \
+ (unsigned int) (mantlo) << 16 \
+ }
+#else
+# define LDBL80_WORDS(exponent,manthi,mantlo) \
+ { mantlo, manthi, exponent }
#endif
static int
return 1;
}
+/* Test whether string[start_index..end_index-1] is a valid textual
+ representation of NaN. */
+static int
+strisnan (const char *string, size_t start_index, size_t end_index, int uppercase)
+{
+ if (start_index < end_index)
+ {
+ if (string[start_index] == '-')
+ start_index++;
+ if (start_index + 3 <= end_index
+ && memcmp (string + start_index, uppercase ? "NAN" : "nan", 3) == 0)
+ {
+ start_index += 3;
+ if (start_index == end_index
+ || (string[start_index] == '(' && string[end_index - 1] == ')'))
+ return 1;
+ }
+ }
+ return 0;
+}
+
static void
test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
{
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%a %d", -0.0, 33, 44, 55);
- ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+ my_snprintf (result, sizeof (result), "%a %d", -zerod, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0x0p+0 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%a %d", NaN (), 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%a %d", NaNd (), 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "nan", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* FLAG_ZERO with NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%020a %d", NaN (), 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%050a %d", NaNd (), 33, 44, 55);
/* "0000000nan 33" is not a valid result; see
<http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */
- ASSERT (strlen (result) == 20 + 3
- && memcmp (result + strspn (result, " "), "nan", 3) == 0
+ ASSERT (strlen (result) == 50 + 3
+ && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%La %d", -0.0L, 33, 44, 55);
- ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+ my_snprintf (result, sizeof (result), "%La %d", minus_zerol, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0x0p+0 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%La %d", 0.0L / 0.0L, 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%La %d", NaNl (), 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_))
+ { /* Quiet NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ {
+ /* Signalling NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities,
+ Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in
+ Intel IA-64 Architecture Software Developer's Manual, Volume 1:
+ Application Architecture.
+ Table 5-2 "Floating-Point Register Encodings"
+ Figure 5-6 "Memory to Floating-Point Register Data Translation"
+ */
+ { /* Pseudo-NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Infinity. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Zero. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Unnormalized number. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "nan", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
+ { /* Pseudo-Denormal. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+#endif
{ /* Rounding near the decimal point. */
char result[100];
{ /* FLAG_ZERO with NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%020La %d", 0.0L / 0.0L, 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%050La %d", NaNl (), 33, 44, 55);
/* "0000000nan 33" is not a valid result; see
<http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */
- ASSERT (strlen (result) == 20 + 3
- && memcmp (result + strspn (result, " "), "nan", 3) == 0
+ ASSERT (strlen (result) == 50 + 3
+ && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%f %d", -0.0, 33, 44, 55);
- ASSERT (strcmp (result, "-0.000000 33") == 0);
+ my_snprintf (result, sizeof (result), "%f %d", -zerod, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0.000000 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%f %d", NaN (), 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%f %d", NaNd (), 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "nan", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%10f %d", 1.75, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, " 1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%-10f %d", 1.75, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, "1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%+f %d", 1.75, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, "+1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "% f %d", 1.75, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, " 1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%#f %d", 1.75, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, "1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%#.f %d", 1.75, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, "2. 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* FLAG_ZERO with NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%020f %d", NaN (), 33, 44, 55);
- ASSERT (strlen (result) == 20 + 3
- && memcmp (result + strspn (result, " "), "nan", 3) == 0
+ my_snprintf (result, sizeof (result), "%050f %d", NaNd (), 33, 44, 55);
+ ASSERT (strlen (result) == 50 + 3
+ && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
ASSERT (retval == strlen (result));
}
+ { /* Precision with no rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.2f %d", 999.951, 33, 44, 55);
+ ASSERT (strcmp (result, "999.95 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.2f %d", 999.996, 33, 44, 55);
+ ASSERT (strcmp (result, "1000.00 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
{ /* A positive number. */
char result[100];
int retval =
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%Lf %d", -0.0L, 33, 44, 55);
- ASSERT (strcmp (result, "-0.000000 33") == 0);
+ my_snprintf (result, sizeof (result), "%Lf %d", minus_zerol, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0.000000 33") == 0);
ASSERT (retval == strlen (result));
}
}
{ /* NaN. */
- static long double zero = 0.0L;
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%Lf %d", zero / zero, 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%Lf %d", NaNl (), 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_))
+ { /* Quiet NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ {
+ /* Signalling NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities,
+ Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in
+ Intel IA-64 Architecture Software Developer's Manual, Volume 1:
+ Application Architecture.
+ Table 5-2 "Floating-Point Register Encodings"
+ Figure 5-6 "Memory to Floating-Point Register Data Translation"
+ */
+ { /* Pseudo-NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Infinity. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Zero. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "nan", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
+ { /* Unnormalized number. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Denormal. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+#endif
{ /* Width. */
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%10Lf %d", 1.75L, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, " 1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%-10Lf %d", 1.75L, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, "1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%+Lf %d", 1.75L, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, "+1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "% Lf %d", 1.75L, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, " 1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%#Lf %d", 1.75L, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, "1.750000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%#.Lf %d", 1.75L, 33, 44, 55);
- ASSERT (result != NULL);
ASSERT (strcmp (result, "2. 33") == 0);
ASSERT (retval == strlen (result));
}
}
{ /* FLAG_ZERO with NaN. */
- static long double zero = 0.0L;
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%020Lf %d", zero / zero, 33, 44, 55);
- ASSERT (strlen (result) == 20 + 3
- && memcmp (result + strspn (result, " "), "nan", 3) == 0
+ my_snprintf (result, sizeof (result), "%050Lf %d", NaNl (), 33, 44, 55);
+ ASSERT (strlen (result) == 50 + 3
+ && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
ASSERT (retval == strlen (result));
}
+ { /* Precision with no rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.2Lf %d", 999.951L, 33, 44, 55);
+ ASSERT (strcmp (result, "999.95 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.2Lf %d", 999.996L, 33, 44, 55);
+ ASSERT (strcmp (result, "1000.00 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
/* Test the support of the %F format directive. */
{ /* A positive number. */
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%F %d", -0.0, 33, 44, 55);
- ASSERT (strcmp (result, "-0.000000 33") == 0);
+ my_snprintf (result, sizeof (result), "%F %d", -zerod, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0.000000 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%F %d", NaN (), 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%F %d", NaNd (), 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "NAN", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 1)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
ASSERT (retval == strlen (result));
}
+ { /* Precision with no rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.2F %d", 999.951, 33, 44, 55);
+ ASSERT (strcmp (result, "999.95 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.2F %d", 999.996, 33, 44, 55);
+ ASSERT (strcmp (result, "1000.00 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
{ /* A positive number. */
char result[100];
int retval =
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%LF %d", -0.0L, 33, 44, 55);
- ASSERT (strcmp (result, "-0.000000 33") == 0);
+ my_snprintf (result, sizeof (result), "%LF %d", minus_zerol, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0.000000 33") == 0);
ASSERT (retval == strlen (result));
}
}
{ /* NaN. */
- static long double zero = 0.0L;
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%LF %d", zero / zero, 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%LF %d", NaNl (), 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "NAN", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 1)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
ASSERT (retval == strlen (result));
}
+ { /* Precision with no rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.2LF %d", 999.951L, 33, 44, 55);
+ ASSERT (strcmp (result, "999.95 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.2LF %d", 999.996L, 33, 44, 55);
+ ASSERT (strcmp (result, "1000.00 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
/* Test the support of the %e format directive. */
{ /* A positive number. */
int retval =
my_snprintf (result, sizeof (result), "%e", data[k].value);
const char *expected = data[k].string;
- ASSERT (result != NULL);
ASSERT (strcmp (result, expected) == 0
/* Some implementations produce exponents with 3 digits. */
|| (strlen (result) == strlen (expected) + 1
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%e %d", -0.0, 33, 44, 55);
- ASSERT (strcmp (result, "-0.000000e+00 33") == 0
- || strcmp (result, "-0.000000e+000 33") == 0);
+ my_snprintf (result, sizeof (result), "%e %d", -zerod, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+ || strcmp (result, "-0.000000e+000 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%e %d", NaN (), 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%e %d", NaNd (), 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "nan", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* FLAG_ZERO with NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%020e %d", NaN (), 33, 44, 55);
- ASSERT (strlen (result) == 20 + 3
- && memcmp (result + strspn (result, " "), "nan", 3) == 0
+ my_snprintf (result, sizeof (result), "%050e %d", NaNd (), 33, 44, 55);
+ ASSERT (strlen (result) == 50 + 3
+ && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
ASSERT (retval == strlen (result));
}
+ { /* Precision with no rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4e %d", 999.951, 33, 44, 55);
+ ASSERT (strcmp (result, "9.9995e+02 33") == 0
+ || strcmp (result, "9.9995e+002 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4e %d", 999.996, 33, 44, 55);
+ ASSERT (strcmp (result, "1.0000e+03 33") == 0
+ || strcmp (result, "1.0000e+003 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
{ /* A positive number. */
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%Le %d", 12.75L, 33, 44, 55);
- ASSERT (strcmp (result, "1.275000e+01 33") == 0);
+ ASSERT (strcmp (result, "1.275000e+01 33") == 0
+ || strcmp (result, "1.275000e+001 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%Le %d", 1234567.0L, 33, 44, 55);
- ASSERT (strcmp (result, "1.234567e+06 33") == 0);
+ ASSERT (strcmp (result, "1.234567e+06 33") == 0
+ || strcmp (result, "1.234567e+006 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%Le", data[k].value);
- ASSERT (strcmp (result, data[k].string) == 0);
+ const char *expected = data[k].string;
+ ASSERT (strcmp (result, expected) == 0
+ /* Some implementations produce exponents with 3 digits. */
+ || (strlen (result) == strlen (expected) + 1
+ && memcmp (result, expected, strlen (expected) - 2) == 0
+ && result[strlen (expected) - 2] == '0'
+ && strcmp (result + strlen (expected) - 1,
+ expected + strlen (expected) - 2)
+ == 0));
ASSERT (retval == strlen (result));
}
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%Le %d", -0.03125L, 33, 44, 55);
- ASSERT (strcmp (result, "-3.125000e-02 33") == 0);
+ ASSERT (strcmp (result, "-3.125000e-02 33") == 0
+ || strcmp (result, "-3.125000e-002 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%Le %d", 0.0L, 33, 44, 55);
- ASSERT (strcmp (result, "0.000000e+00 33") == 0);
+ ASSERT (strcmp (result, "0.000000e+00 33") == 0
+ || strcmp (result, "0.000000e+000 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%Le %d", -0.0L, 33, 44, 55);
- ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
+ my_snprintf (result, sizeof (result), "%Le %d", minus_zerol, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+ || strcmp (result, "-0.000000e+000 33") == 0);
ASSERT (retval == strlen (result));
}
}
{ /* NaN. */
- static long double zero = 0.0L;
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%Le %d", zero / zero, 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%Le %d", NaNl (), 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_))
+ { /* Quiet NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "nan", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
+ {
+ /* Signalling NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities,
+ Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in
+ Intel IA-64 Architecture Software Developer's Manual, Volume 1:
+ Application Architecture.
+ Table 5-2 "Floating-Point Register Encodings"
+ Figure 5-6 "Memory to Floating-Point Register Data Translation"
+ */
+ { /* Pseudo-NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Infinity. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Zero. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Unnormalized number. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Denormal. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+#endif
{ /* Width. */
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%15Le %d", 1.75L, 33, 44, 55);
- ASSERT (strcmp (result, " 1.750000e+00 33") == 0);
+ ASSERT (strcmp (result, " 1.750000e+00 33") == 0
+ || strcmp (result, " 1.750000e+000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%-15Le %d", 1.75L, 33, 44, 55);
- ASSERT (strcmp (result, "1.750000e+00 33") == 0);
+ ASSERT (strcmp (result, "1.750000e+00 33") == 0
+ || strcmp (result, "1.750000e+000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%+Le %d", 1.75L, 33, 44, 55);
- ASSERT (strcmp (result, "+1.750000e+00 33") == 0);
+ ASSERT (strcmp (result, "+1.750000e+00 33") == 0
+ || strcmp (result, "+1.750000e+000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "% Le %d", 1.75L, 33, 44, 55);
- ASSERT (strcmp (result, " 1.750000e+00 33") == 0);
+ ASSERT (strcmp (result, " 1.750000e+00 33") == 0
+ || strcmp (result, " 1.750000e+000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%#Le %d", 1.75L, 33, 44, 55);
- ASSERT (strcmp (result, "1.750000e+00 33") == 0);
+ ASSERT (strcmp (result, "1.750000e+00 33") == 0
+ || strcmp (result, "1.750000e+000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%#.Le %d", 1.75L, 33, 44, 55);
- ASSERT (strcmp (result, "2.e+00 33") == 0);
+ ASSERT (strcmp (result, "2.e+00 33") == 0
+ || strcmp (result, "2.e+000 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%#.Le %d", 9.75L, 33, 44, 55);
- ASSERT (strcmp (result, "1.e+01 33") == 0);
+ ASSERT (strcmp (result, "1.e+01 33") == 0
+ || strcmp (result, "1.e+001 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%015Le %d", 1234.0L, 33, 44, 55);
- ASSERT (strcmp (result, "0001.234000e+03 33") == 0);
+ ASSERT (strcmp (result, "0001.234000e+03 33") == 0
+ || strcmp (result, "001.234000e+003 33") == 0);
ASSERT (retval == strlen (result));
}
}
{ /* FLAG_ZERO with NaN. */
- static long double zero = 0.0L;
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%020Le %d", zero / zero, 33, 44, 55);
- ASSERT (strlen (result) == 20 + 3
- && memcmp (result + strspn (result, " "), "nan", 3) == 0
+ my_snprintf (result, sizeof (result), "%050Le %d", NaNl (), 33, 44, 55);
+ ASSERT (strlen (result) == 50 + 3
+ && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%.Le %d", 1234.0L, 33, 44, 55);
- ASSERT (strcmp (result, "1e+03 33") == 0);
+ ASSERT (strcmp (result, "1e+03 33") == 0
+ || strcmp (result, "1e+003 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with no rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4Le %d", 999.951L, 33, 44, 55);
+ ASSERT (strcmp (result, "9.9995e+02 33") == 0
+ || strcmp (result, "9.9995e+002 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4Le %d", 999.996L, 33, 44, 55);
+ ASSERT (strcmp (result, "1.0000e+03 33") == 0
+ || strcmp (result, "1.0000e+003 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%g %d", -0.0, 33, 44, 55);
- ASSERT (strcmp (result, "-0 33") == 0);
+ my_snprintf (result, sizeof (result), "%g %d", -zerod, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%g %d", NaN (), 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%g %d", NaNd (), 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "nan", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
{ /* FLAG_ZERO with NaN. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%020g %d", NaN (), 33, 44, 55);
- ASSERT (strlen (result) == 20 + 3
- && memcmp (result + strspn (result, " "), "nan", 3) == 0
+ my_snprintf (result, sizeof (result), "%050g %d", NaNd (), 33, 44, 55);
+ ASSERT (strlen (result) == 50 + 3
+ && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
ASSERT (retval == strlen (result));
}
+ { /* Precision with no rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.5g %d", 999.951, 33, 44, 55);
+ ASSERT (strcmp (result, "999.95 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.5g %d", 999.996, 33, 44, 55);
+ ASSERT (strcmp (result, "1000 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
{ /* A positive number. */
char result[100];
int retval =
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%Lg %d", 1234567.0L, 33, 44, 55);
- ASSERT (strcmp (result, "1.23457e+06 33") == 0);
+ ASSERT (strcmp (result, "1.23457e+06 33") == 0
+ || strcmp (result, "1.23457e+006 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%Lg", data[k].value);
- ASSERT (strcmp (result, data[k].string) == 0);
+ const char *expected = data[k].string;
+ ASSERT (strcmp (result, expected) == 0
+ /* Some implementations produce exponents with 3 digits. */
+ || (expected[strlen (expected) - 4] == 'e'
+ && strlen (result) == strlen (expected) + 1
+ && memcmp (result, expected, strlen (expected) - 2) == 0
+ && result[strlen (expected) - 2] == '0'
+ && strcmp (result + strlen (expected) - 1,
+ expected + strlen (expected) - 2)
+ == 0));
ASSERT (retval == strlen (result));
}
}
{ /* Negative zero. */
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%Lg %d", -0.0L, 33, 44, 55);
- ASSERT (strcmp (result, "-0 33") == 0);
+ my_snprintf (result, sizeof (result), "%Lg %d", minus_zerol, 33, 44, 55);
+ if (have_minus_zero ())
+ ASSERT (strcmp (result, "-0 33") == 0);
ASSERT (retval == strlen (result));
}
}
{ /* NaN. */
- static long double zero = 0.0L;
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%Lg %d", zero / zero, 33, 44, 55);
+ my_snprintf (result, sizeof (result), "%Lg %d", NaNl (), 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+#if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_))
+ { /* Quiet NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ {
+ /* Signalling NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55);
ASSERT (strlen (result) >= 3 + 3
- && memcmp (result, "nan", 3) == 0
+ && strisnan (result, 0, strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
+ /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities,
+ Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in
+ Intel IA-64 Architecture Software Developer's Manual, Volume 1:
+ Application Architecture.
+ Table 5-2 "Floating-Point Register Encodings"
+ Figure 5-6 "Memory to Floating-Point Register Data Translation"
+ */
+ { /* Pseudo-NaN. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Infinity. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Zero. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Unnormalized number. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+ { /* Pseudo-Denormal. */
+ static union { unsigned int word[4]; long double value; } x =
+ { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55);
+ ASSERT (strlen (result) >= 3 + 3
+ && strisnan (result, 0, strlen (result) - 3, 0)
+ && strcmp (result + strlen (result) - 3, " 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+#endif
{ /* Width. */
char result[100];
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%#.Lg %d", 9.75L, 33, 44, 55);
- ASSERT (strcmp (result, "1.e+01 33") == 0);
+ ASSERT (strcmp (result, "1.e+01 33") == 0
+ || strcmp (result, "1.e+001 33") == 0);
ASSERT (retval == strlen (result));
}
}
{ /* FLAG_ZERO with NaN. */
- static long double zero = 0.0L;
char result[100];
int retval =
- my_snprintf (result, sizeof (result), "%020Lg %d", zero / zero, 33, 44, 55);
- ASSERT (strlen (result) == 20 + 3
- && memcmp (result + strspn (result, " "), "nan", 3) == 0
+ my_snprintf (result, sizeof (result), "%050Lg %d", NaNl (), 33, 44, 55);
+ ASSERT (strlen (result) == 50 + 3
+ && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
&& strcmp (result + strlen (result) - 3, " 33") == 0);
ASSERT (retval == strlen (result));
}
char result[100];
int retval =
my_snprintf (result, sizeof (result), "%.Lg %d", 1234.0L, 33, 44, 55);
- ASSERT (strcmp (result, "1e+03 33") == 0);
+ ASSERT (strcmp (result, "1e+03 33") == 0
+ || strcmp (result, "1e+003 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with no rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.5Lg %d", 999.951L, 33, 44, 55);
+ ASSERT (strcmp (result, "999.95 33") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ { /* Precision with rounding. */
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.5Lg %d", 999.996L, 33, 44, 55);
+ ASSERT (strcmp (result, "1000 33") == 0);
ASSERT (retval == strlen (result));
}
ASSERT (result[strlen (result) - 1] == '9');
ASSERT (retval == strlen (result));
}
+
+ /* Test the support of the left-adjust flag. */
+
+ {
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "a%*sc", -3, "b");
+ ASSERT (strcmp (result, "ab c") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "a%-*sc", 3, "b");
+ ASSERT (strcmp (result, "ab c") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char result[100];
+ int retval =
+ my_snprintf (result, sizeof (result), "a%-*sc", -3, "b");
+ ASSERT (strcmp (result, "ab c") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ /* Test the support of large precision. */
+
+ {
+ char result[5000];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4000d %d", 1234567, 99);
+ size_t i;
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char result[5000];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.*d %d", 4000, 1234567, 99);
+ size_t i;
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char result[5000];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4000d %d", -1234567, 99);
+ size_t i;
+ ASSERT (result[0] == '-');
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[1 + i] == '0');
+ ASSERT (strcmp (result + 1 + 4000 - 7, "1234567 99") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char result[5000];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4000u %d", 1234567, 99);
+ size_t i;
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char result[5000];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4000o %d", 1234567, 99);
+ size_t i;
+ for (i = 0; i < 4000 - 7; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 7, "4553207 99") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char result[5000];
+ int retval =
+ my_snprintf (result, sizeof (result), "%.4000x %d", 1234567, 99);
+ size_t i;
+ for (i = 0; i < 4000 - 6; i++)
+ ASSERT (result[i] == '0');
+ ASSERT (strcmp (result + 4000 - 6, "12d687 99") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char result[5000];
+ int retval =
+ my_snprintf (result, sizeof (result), "%#.4000x %d", 1234567, 99);
+ size_t i;
+ ASSERT (result[0] == '0');
+ ASSERT (result[1] == 'x');
+ for (i = 0; i < 4000 - 6; i++)
+ ASSERT (result[2 + i] == '0');
+ ASSERT (strcmp (result + 2 + 4000 - 6, "12d687 99") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ {
+ char input[5000];
+ char result[5000];
+ int retval;
+ size_t i;
+
+ for (i = 0; i < sizeof (input) - 1; i++)
+ input[i] = 'a' + ((1000000 / (i + 1)) % 26);
+ input[i] = '\0';
+ retval = my_snprintf (result, sizeof (result), "%.4000s %d", input, 99);
+ ASSERT (memcmp (result, input, 4000) == 0);
+ ASSERT (strcmp (result + 4000, " 99") == 0);
+ ASSERT (retval == strlen (result));
+ }
+
+ /* Test the support of the %s format directive. */
+
+ /* To verify that these tests succeed, it is necessary to run them under
+ a tool that checks against invalid memory accesses, such as ElectricFence
+ or "valgrind --tool=memcheck". */
+ {
+ size_t i;
+
+ for (i = 1; i <= 8; i++)
+ {
+ char *block;
+ char result[5000];
+ int retval;
+
+ block = (char *) malloc (i);
+ memcpy (block, "abcdefgh", i);
+ retval = my_snprintf (result, sizeof (result), "%.*s", (int) i, block);
+ ASSERT (memcmp (result, block, i) == 0);
+ ASSERT (result[i] == '\0');
+ ASSERT (retval == strlen (result));
+ free (block);
+ }
+ }
+#if HAVE_WCHAR_T
+ {
+ size_t i;
+
+ for (i = 1; i <= 8; i++)
+ {
+ wchar_t *block;
+ size_t j;
+ char result[5000];
+ int retval;
+
+ block = (wchar_t *) malloc (i * sizeof (wchar_t));
+ for (j = 0; j < i; j++)
+ block[j] = "abcdefgh"[j];
+ retval = my_snprintf (result, sizeof (result), "%.*ls", (int) i, block);
+ ASSERT (memcmp (result, "abcdefgh", i) == 0);
+ ASSERT (result[i] == '\0');
+ ASSERT (retval == strlen (result));
+ free (block);
+ }
+ }
+#endif
}
projects / gnulib.git / blobdiff