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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_truncf.S | |
| parent | f64f68f53b2bd7c490f198b6da84f0ef41942aee (diff) | |
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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_truncf.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/fpu/s_truncf.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_truncf.S b/sysdeps/powerpc/powerpc32/fpu/s_truncf.S index 6c2c959e71..6006f1553b 100644 --- a/sysdeps/powerpc/powerpc32/fpu/s_truncf.S +++ b/sysdeps/powerpc/powerpc32/fpu/s_truncf.S @@ -50,7 +50,7 @@ ENTRY (__truncf) mffs fp11 /* Save current FPU rounding mode and "inexact" state. */ fcmpu cr6,fp1,fp12 /* if (x > 0.0) */ - bnllr- cr7 + bnl- cr7,.L10 mtfsfi 7,1 /* Set rounding toward 0 mode. */ ble- cr6,.L4 fadds fp1,fp1,fp13 /* x+= TWO23; */ @@ -70,6 +70,12 @@ ENTRY (__truncf) mtfsf 0xff,fp11 /* Restore previous rounding mode and "inexact" state. */ blr +.L10: + /* Ensure sNaN input is converted to qNaN. */ + fcmpu cr7,fp1,fp1 + beqlr cr7 + fadds fp1,fp1,fp1 + blr END (__truncf) weak_alias (__truncf, truncf) |