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author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-03-08 11:24:32 -0600 |
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committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-03-08 11:24:32 -0600 |
commit | 54b46a4b3efd179ccbbf8e342e64391e2b590f1b (patch) | |
tree | 32dfb4e2743b612727fbf3ca05bacdfe9e103bba /sysdeps/powerpc/power5+/fpu/s_modf.c | |
parent | e9996ef750d845b46bc7d743c730c73f044720af (diff) | |
download | glibc-54b46a4b3efd179ccbbf8e342e64391e2b590f1b.tar.gz glibc-54b46a4b3efd179ccbbf8e342e64391e2b590f1b.tar.xz glibc-54b46a4b3efd179ccbbf8e342e64391e2b590f1b.zip |
PowerPC: Fix modf/modff optimization return sign
This patch fix the optimized powerpc-fpu modf/modff implementation when using in non-default rounding mode where the zero sign is not as expected. It fixes the libm testsuite tests modf_downward (0) == 0.00000000000000000000e+00 modf_downward (20) == 0.00000000000000000000e+00 modf_downward (21) == 0.00000000000000000000e+00 Where the sign returned was negative.
Diffstat (limited to 'sysdeps/powerpc/power5+/fpu/s_modf.c')
-rw-r--r-- | sysdeps/powerpc/power5+/fpu/s_modf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sysdeps/powerpc/power5+/fpu/s_modf.c b/sysdeps/powerpc/power5+/fpu/s_modf.c index eb469f7647..06da3ac809 100644 --- a/sysdeps/powerpc/power5+/fpu/s_modf.c +++ b/sysdeps/powerpc/power5+/fpu/s_modf.c @@ -36,12 +36,12 @@ __modf (double x, double *iptr) if (x >= 0.0) { *iptr = __floor (x); - return (x - *iptr); + return __copysign (x - *iptr, x); } else { *iptr = __ceil (x); - return (x - *iptr); + return __copysign (x - *iptr, x); } } weak_alias (__modf, modf) |