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| author | Joseph Myers <joseph@codesourcery.com> | 2016-05-27 17:31:21 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-05-27 17:31:21 +0000 |
| commit | debf7618f68deed8b378beb199525d4467edb6d4 (patch) | |
| tree | 7735fc554becbc3f0555369adc5dfdce33e4e549 /sysdeps/powerpc/powerpc32/fpu/s_rint.S | |
| parent | f64f68f53b2bd7c490f198b6da84f0ef41942aee (diff) | |
| download | glibc-debf7618f68deed8b378beb199525d4467edb6d4.tar.gz glibc-debf7618f68deed8b378beb199525d4467edb6d4.tar.xz glibc-debf7618f68deed8b378beb199525d4467edb6d4.zip | |
Fix powerpc32 ceil, rint etc. on sNaN input (bug 20160).
The powerpc32 versions of ceil, floor, round, trunc, rint, nearbyint and their float versions return sNaN for sNaN input when they should return qNaN. This patch fixes them to add a NaN argument to itself to quiet sNaNs before returning. The powerpc64 versions, which have the same bug, will be addressed separately. Tested for powerpc32. [BZ #20160] * sysdeps/powerpc/powerpc32/fpu/s_ceil.S (__ceil): Add NaN argument to itself before returning the result. * sysdeps/powerpc/powerpc32/fpu/s_ceilf.S (__ceilf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_floor.S (__floor): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_floorf.S (__floorf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_nearbyint.S (__nearbyint): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_rint.S (__rint): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_rintf.S (__rintf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_round.S (__round): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_roundf.S (__roundf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_trunc.S (__trunc): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_truncf.S (__truncf): Likewise.
Diffstat (limited to 'sysdeps/powerpc/powerpc32/fpu/s_rint.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/fpu/s_rint.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_rint.S b/sysdeps/powerpc/powerpc32/fpu/s_rint.S index 5d78f3a5fc..8124feec8d 100644 --- a/sysdeps/powerpc/powerpc32/fpu/s_rint.S +++ b/sysdeps/powerpc/powerpc32/fpu/s_rint.S @@ -45,7 +45,7 @@ ENTRY (__rint) fsub fp12,fp13,fp13 /* generate 0.0 */ fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */ fcmpu cr6,fp1,fp12 /* if (x > 0.0) */ - bnllr cr7 + bnl cr7,.L10 bng cr6,.L4 fadd fp1,fp1,fp13 /* x+= TWO52; */ fsub fp1,fp1,fp13 /* x-= TWO52; */ @@ -57,6 +57,12 @@ ENTRY (__rint) fadd fp1,fp1,fp13 /* x+= TWO52; */ fnabs fp1,fp1 /* if (x == 0.0) */ blr /* x = -0.0; */ +.L10: + /* Ensure sNaN input is converted to qNaN. */ + fcmpu cr7,fp1,fp1 + beqlr cr7 + fadd fp1,fp1,fp1 + blr END (__rint) weak_alias (__rint, rint) |