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doc: Improve wording in relocatable-maint.texi.
[gnulib.git]
/
lib
/
ldexpl.c
diff --git
a/lib/ldexpl.c
b/lib/ldexpl.c
index
6047413
..
f560053
100644
(file)
--- a/
lib/ldexpl.c
+++ b/
lib/ldexpl.c
@@
-1,7
+1,7
@@
/* Emulation for ldexpl.
Contributed by Paolo Bonzini
/* Emulation for ldexpl.
Contributed by Paolo Bonzini
- Copyright 2002
, 2003, 2007
Free Software Foundation, Inc.
+ Copyright 2002
-2003, 2007-2013
Free Software Foundation, Inc.
This file is part of gnulib.
This file is part of gnulib.
@@
-23,12
+23,21
@@
/* Specification. */
#include <math.h>
/* Specification. */
#include <math.h>
-#include <float.h>
-#include "fpucw.h"
-#include "isnanl.h"
+#if HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
long double
long double
-ldexpl(long double x, int exp)
+ldexpl (long double x, int exp)
+{
+ return ldexp (x, exp);
+}
+
+#else
+
+# include <float.h>
+# include "fpucw.h"
+
+long double
+ldexpl (long double x, int exp)
{
long double factor;
int bit;
{
long double factor;
int bit;
@@
-40,25
+49,25
@@
ldexpl(long double x, int exp)
if (!(isnanl (x) || x + x == x))
{
if (exp < 0)
if (!(isnanl (x) || x + x == x))
{
if (exp < 0)
- {
- exp = -exp;
- factor = 0.5L;
- }
+
{
+
exp = -exp;
+
factor = 0.5L;
+
}
else
else
- factor = 2.0L;
+
factor = 2.0L;
if (exp > 0)
if (exp > 0)
- for (bit = 1;;)
- {
- /* Invariant: Here bit = 2^i, factor = 2^-2^i or = 2^2^i,
- and bit <= exp. */
- if (exp & bit)
- x *= factor;
- bit <<= 1;
- if (bit > exp)
- break;
- factor = factor * factor;
- }
+
for (bit = 1;;)
+
{
+
/* Invariant: Here bit = 2^i, factor = 2^-2^i or = 2^2^i,
+
and bit <= exp. */
+
if (exp & bit)
+
x *= factor;
+
bit <<= 1;
+
if (bit > exp)
+
break;
+
factor = factor * factor;
+
}
}
END_LONG_DOUBLE_ROUNDING ();
}
END_LONG_DOUBLE_ROUNDING ();
@@
-66,6
+75,8
@@
ldexpl(long double x, int exp)
return x;
}
return x;
}
+#endif
+
#if 0
int
main (void)
#if 0
int
main (void)
@@
-73,6
+84,6
@@
main (void)
long double x;
int y;
for (y = 0; y < 29; y++)
long double x;
int y;
for (y = 0; y < 29; y++)
- printf ("%5d %.16Lg %.16Lg\n", y, ldexpl
(0.8L, y), ldexpl(0.8L, -y) * ldexpl
(0.8L, y));
+ printf ("%5d %.16Lg %.16Lg\n", y, ldexpl
(0.8L, y), ldexpl (0.8L, -y) * ldexpl
(0.8L, y));
}
#endif
}
#endif