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| author | Ulrich Drepper <drepper@redhat.com> | 2003-12-07 21:22:46 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-12-07 21:22:46 +0000 |
| commit | 07449987c90864fceb487994b4aaa5170803ab24 (patch) | |
| tree | 76771090b9cb1866d55b5986c677e51dd768c3af /sysdeps/ieee754 | |
| parent | 64b02fd2f5fd5d2e2b7187b5e982fa6b59587500 (diff) | |
| download | glibc-07449987c90864fceb487994b4aaa5170803ab24.tar.gz glibc-07449987c90864fceb487994b4aaa5170803ab24.tar.xz glibc-07449987c90864fceb487994b4aaa5170803ab24.zip | |
Update.
2003-12-07 Ulrich Drepper <drepper@redhat.com> * sysdeps/i386/fpu/s_nexttowardf.c: Construct overflow value correctly. * sysdeps/i386/fpu/s_nexttoward.c: Likewise. * sysdeps/ieee754/ldbl-128/s_nexttoward.c: Likewise. * sysdeps/ieee754/ldbl-96/s_nexttoward.c: Likewise. * math/Makefile (tests): Add bug-nexttoward. * math/bug-nexttowward.c: New file. * sysdeps/generic/s_nextafter.c: Make sure overflow exception is set. * sysdeps/ieee754/flt-32/s_nextafterf.c: Likewise. * math/bug-nextafter.c (main): Add tests for overflow and negative values.
Diffstat (limited to 'sysdeps/ieee754')
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_nextafterf.c | 10 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/s_nexttoward.c | 9 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/s_nexttoward.c | 9 |
3 files changed, 20 insertions, 8 deletions
diff --git a/sysdeps/ieee754/flt-32/s_nextafterf.c b/sysdeps/ieee754/flt-32/s_nextafterf.c index e144e56acd..e1568e24c9 100644 --- a/sysdeps/ieee754/flt-32/s_nextafterf.c +++ b/sysdeps/ieee754/flt-32/s_nextafterf.c @@ -59,12 +59,10 @@ static char rcsid[] = "$NetBSD: s_nextafterf.c,v 1.4 1995/05/10 20:48:01 jtc Exp } hy = hx&0x7f800000; if(hy>=0x7f800000) { -#if FLT_EVAL_METHOD == 0 - return x+x; /* overflow */ -#else - /* Note that y is either +Inf or -Inf. */ - return x+y; -#endif + x = x+x; /* overflow */ + if (FLT_EVAL_METHOD != 0) + asm ("" : "=m"(x) : "m"(x)); + return x; /* overflow */ } if(hy<0x00800000) { /* underflow */ y = x*x; diff --git a/sysdeps/ieee754/ldbl-128/s_nexttoward.c b/sysdeps/ieee754/ldbl-128/s_nexttoward.c index 2c654fb973..553e401973 100644 --- a/sysdeps/ieee754/ldbl-128/s_nexttoward.c +++ b/sysdeps/ieee754/ldbl-128/s_nexttoward.c @@ -27,6 +27,7 @@ static char rcsid[] = "$NetBSD: $"; #include "math.h" #include "math_private.h" +#include <float.h> #ifdef __STDC__ double __nexttoward(double x, long double y) @@ -83,7 +84,13 @@ static char rcsid[] = "$NetBSD: $"; } } hy = hx&0x7ff00000; - if(hy>=0x7ff00000) return x+x; /* overflow */ + if(hy>=0x7ff00000) { + x = x+x; /* overflow */ + if (FLT_EVAL_METHOD != 0 && FLT_EVAL_METHOD != 1) + /* Force conversion to float. */ + asm ("" : "=m"(x) : "m"(x)); + return x; + } if(hy<0x00100000) { /* underflow */ double x2 = x*x; if(x2!=x) { /* raise underflow flag */ diff --git a/sysdeps/ieee754/ldbl-96/s_nexttoward.c b/sysdeps/ieee754/ldbl-96/s_nexttoward.c index c29bcd146d..8b273af929 100644 --- a/sysdeps/ieee754/ldbl-96/s_nexttoward.c +++ b/sysdeps/ieee754/ldbl-96/s_nexttoward.c @@ -27,6 +27,7 @@ static char rcsid[] = "$NetBSD: $"; #include "math.h" #include "math_private.h" +#include <float.h> #ifdef __STDC__ double __nexttoward(double x, long double y) @@ -80,7 +81,13 @@ static char rcsid[] = "$NetBSD: $"; } } hy = hx&0x7ff00000; - if(hy>=0x7ff00000) return x+x; /* overflow */ + if(hy>=0x7ff00000) { + x = x+x; /* overflow */ + if (FLT_EVAL_METHOD != 0 && FLT_EVAL_METHOD != 1) + /* Force conversion to float. */ + asm ("" : "=m"(x) : "m"(x)); + return x; + } if(hy<0x00100000) { /* underflow */ double x2 = x*x; if(x2!=x) { /* raise underflow flag */ |