X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-strtod.c;h=69dd4749e771a4e0071b87833a3eefb46f2d6b85;hb=6184bd1482b08fb6e3076931b73cbf09639509bc;hp=aff36ee5569716c8c0fab86817e477a6290272d2;hpb=4dd6fc750dfb7f21b2b764737c0656694281ed19;p=gnulib.git diff --git a/tests/test-strtod.c b/tests/test-strtod.c index aff36ee55..69dd4749e 100644 --- a/tests/test-strtod.c +++ b/tests/test-strtod.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2008 Free Software Foundation + * Copyright (C) 2008, 2009 Free Software Foundation * Written by Eric Blake * * This program is free software: you can redistribute it and/or modify @@ -25,19 +25,29 @@ #include #include +#include "isnand-nolibm.h" + #define ASSERT(expr) \ do \ { \ if (!(expr)) \ { \ fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ + fflush (stderr); \ /* FIXME abort ();*/status = 1; \ } \ } \ while (0) +/* Avoid requiring -lm just for fabs. */ +#define FABS(d) ((d) < 0.0 ? -(d) : (d)) + +/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0. + So we use -zero instead. */ +double zero = 0.0; + int -main () +main (void) { int status = 0; /* Subject sequence empty or invalid. */ @@ -157,7 +167,10 @@ main () double result; errno = 0; result = strtod (input, &ptr); - ASSERT (result == 0.5); + /* FIXME - gnulib's version is rather inaccurate. It would be + nice to guarantee an exact result, but for now, we settle for a + 1-ulp error. */ + ASSERT (FABS (result - 0.5) < DBL_EPSILON); ASSERT (ptr == input + 2); ASSERT (errno == 0); } @@ -237,7 +250,10 @@ main () double result; errno = 0; result = strtod (input, &ptr); - ASSERT (result == 0.5); + /* FIXME - gnulib's version is rather inaccurate. It would be + nice to guarantee an exact result, but for now, we settle for a + 1-ulp error. */ + ASSERT (FABS (result - 0.5) < DBL_EPSILON); ASSERT (ptr == input + 4); ASSERT (errno == 0); } @@ -305,7 +321,7 @@ main () errno = 0; result = strtod (input, &ptr); ASSERT (result == 0.0); - ASSERT (!!signbit (result) == !!signbit (-0.0)); /* IRIX 6.5, OSF/1 4.0 */ + ASSERT (!!signbit (result) == !!signbit (-zero)); /* IRIX 6.5, OSF/1 4.0 */ ASSERT (ptr == input + 2); ASSERT (errno == 0); } @@ -400,7 +416,7 @@ main () errno = 0; result = strtod (input, &ptr); ASSERT (result == 0.0); - ASSERT (!!signbit (result) == !!signbit (-0.0)); /* MacOS X 10.3, FreeBSD 6.2, IRIX 6.5, OSF/1 4.0 */ + ASSERT (!!signbit (result) == !!signbit (-zero)); /* MacOS X 10.3, FreeBSD 6.2, IRIX 6.5, OSF/1 4.0 */ ASSERT (ptr == input + 2); /* glibc-2.3.6, MacOS X 10.3, FreeBSD 6.2 */ ASSERT (errno == 0); } @@ -508,7 +524,7 @@ main () double result; errno = 0; result = strtod (input, &ptr); - ASSERT (0.0 <= result && result <= FLT_MIN); + ASSERT (0.0 <= result && result <= DBL_MIN); ASSERT (!signbit (result)); ASSERT (ptr == input + 9); ASSERT (errno == ERANGE); @@ -519,13 +535,13 @@ main () double result; errno = 0; result = strtod (input, &ptr); - ASSERT (-FLT_MIN <= result && result <= 0.0); + ASSERT (-DBL_MIN <= result && result <= 0.0); #if 0 /* FIXME - this is glibc bug 5995; POSIX allows returning positive 0 on negative underflow, even though quality of implementation demands preserving the sign. Disable this test until fixed glibc is more prevalent. */ - ASSERT (!!signbit (result) == !!signbit (-0.0)); /* glibc-2.3.6, mingw */ + ASSERT (!!signbit (result) == !!signbit (-zero)); /* glibc-2.3.6, mingw */ #endif ASSERT (ptr == input + 10); ASSERT (errno == ERANGE); @@ -595,8 +611,8 @@ main () result1 = strtod (input, &ptr1); result2 = strtod (input + 1, &ptr2); #if 1 /* All known CPUs support NaNs. */ - ASSERT (isnan (result1)); /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */ - ASSERT (isnan (result2)); /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result1)); /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result2)); /* OpenBSD 4.0, IRIX 6.5, OSF/1 5.1, mingw */ # if 0 /* Sign bits of NaN is a portability sticking point, not worth worrying about. */ @@ -625,8 +641,8 @@ main () result1 = strtod (input, &ptr1); result2 = strtod (input + 1, &ptr2); #if 1 /* All known CPUs support NaNs. */ - ASSERT (isnan (result1)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ - ASSERT (isnan (result2)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result1)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result2)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ ASSERT (!!signbit (result1) == !!signbit (result2)); ASSERT (ptr1 == input + 4); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 2.5.1, mingw */ ASSERT (ptr2 == input + 4); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, Solaris 2.5.1, mingw */ @@ -651,8 +667,8 @@ main () result1 = strtod (input, &ptr1); result2 = strtod (input + 1, &ptr2); #if 1 /* All known CPUs support NaNs. */ - ASSERT (isnan (result1)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ - ASSERT (isnan (result2)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result1)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result2)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ # if 0 /* Sign bits of NaN is a portability sticking point, not worth worrying about. */ @@ -678,7 +694,7 @@ main () errno = 0; result = strtod (input, &ptr); #if 1 /* All known CPUs support NaNs. */ - ASSERT (isnan (result)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ ASSERT (ptr == input + 6); /* glibc-2.3.6, MacOS X 10.3, FreeBSD 6.2, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ ASSERT (errno == 0); #else @@ -701,8 +717,8 @@ main () result1 = strtod (input, &ptr1); result2 = strtod (input + 1, &ptr2); #if 1 /* All known CPUs support NaNs. */ - ASSERT (isnan (result1)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ - ASSERT (isnan (result2)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result1)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ + ASSERT (isnand (result2)); /* OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, OSF/1 5.1, mingw */ # if 0 /* Sign bits of NaN is a portability sticking point, not worth worrying about. */ @@ -894,7 +910,7 @@ main () errno = 0; result = strtod (input, &ptr); ASSERT (result == 0.0); - ASSERT (!!signbit (result) == !!signbit (-0.0)); /* IRIX 6.5, OSF/1 4.0 */ + ASSERT (!!signbit (result) == !!signbit (-zero)); /* IRIX 6.5, OSF/1 4.0 */ ASSERT (ptr == input + m); ASSERT (errno == 0); } @@ -904,7 +920,7 @@ main () /* Rounding. */ /* TODO - is it worth some tests of rounding for typical IEEE corner cases, such as .5 ULP rounding up to the smallest denormal and - not causing underflow, or FLT_MIN - .5 ULP not causing an + not causing underflow, or DBL_MIN - .5 ULP not causing an infinite loop? */ return status;