diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/s_nextafterl.c | 26 |
2 files changed, 28 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog index bc30cc6ff2..b083cef78e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,7 +1,11 @@ 2000-12-03 Ulrich Drepper <drepper@redhat.com> - * math/test-misc.c (main): Test for pseudo denormal numbers on x86. - * sysdeps/i386/fpu/fpclassify.c: New file. + * sysdeps/i386/fpu/s_nextafterl.c (__nextafterl): Hopefully fix + the handling of denormalized numbers. + + * math/test-misc.c (main): Test for fpclassify and pseudo denormal + numbers on x86. + * sysdeps/i386/fpu/fpclassifyl.c: New file. * sysdeps/i386/ldbl2mpn.c (__mpn_extract_long_double): Handle the pseudo denormal representation of LDBL_MIN. diff --git a/sysdeps/i386/fpu/s_nextafterl.c b/sysdeps/i386/fpu/s_nextafterl.c index bca7181c50..a905858e76 100644 --- a/sysdeps/i386/fpu/s_nextafterl.c +++ b/sysdeps/i386/fpu/s_nextafterl.c @@ -59,8 +59,17 @@ static char rcsid[] = "$NetBSD: $"; if(ix>iy||((ix==iy) && (hx>hy||((hx==hy)&&(lx>ly))))) { /* x > y, x -= ulp */ if(lx==0) { - if (hx==0) esx -= 1; - hx -= 1; + if (hx <= 0x80000000) { + if (esx == 0) + hx = 0; + else { + esx -= 1; + hx = hx - 1; + if (esx > 0) + hx |= 0x80000000; + } + } else + hx -= 1; } lx -= 1; } else { /* x < y, x += ulp */ @@ -75,8 +84,17 @@ static char rcsid[] = "$NetBSD: $"; if(esy>=0||(ix>iy||((ix==iy)&&(hx>hy||((hx==hy)&&(lx>ly)))))){ /* x < y, x -= ulp */ if(lx==0) { - if (hx==0) esx -= 1; - hx -= 1; + if (hx <= 0x80000000) { + if (esx == 0) + hx = 0; + else { + esx -= 1; + hx = hx - 1; + if (esx > 0) + hx |= 0x80000000; + } + } else + hx -= 1; } lx -= 1; } else { /* x > y, x += ulp */ |