From 64b02fd2f5fd5d2e2b7187b5e982fa6b59587500 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sun, 7 Dec 2003 03:25:24 +0000 Subject: Update. 2003-12-06 Ulrich Drepper * math/Makefile (tests): Add bug-nextafter. * math/bug-nextafter.c: New file. * sysdeps/generic/s_nextafter.c: Construct overflow value correctly. * sysdeps/ieee754/flt-32/s_nextafterf.c: Likewise. * math/libm-test.inc (nextafter_test): Add test for overflow after +/-FLT_MAX etc. --- sysdeps/generic/s_nextafter.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'sysdeps/generic/s_nextafter.c') diff --git a/sysdeps/generic/s_nextafter.c b/sysdeps/generic/s_nextafter.c index a016ab0a4d..9290fc6568 100644 --- a/sysdeps/generic/s_nextafter.c +++ b/sysdeps/generic/s_nextafter.c @@ -27,6 +27,7 @@ static char rcsid[] = "$NetBSD: s_nextafter.c,v 1.8 1995/05/10 20:47:58 jtc Exp #include "math.h" #include "math_private.h" +#include #ifdef __STDC__ double __nextafter(double x, double y) @@ -70,7 +71,14 @@ static char rcsid[] = "$NetBSD: s_nextafter.c,v 1.8 1995/05/10 20:47:58 jtc Exp } } hy = hx&0x7ff00000; - if(hy>=0x7ff00000) return x+x; /* overflow */ + if(hy>=0x7ff00000) { +#if FLT_EVAL_METHOD == 0 || FLT_EVAL_METHOD == 1 + return x+x; /* overflow */ +#else + /* Note that y is either +Inf or -Inf. */ + return x+y; +#endif + } if(hy<0x00100000) { /* underflow */ y = x*x; if(y!=x) { /* raise underflow flag */ -- cgit v1.2.3