diff options
| author | Maciej W. Rozycki <macro@linux-mips.org> | 2015-04-03 23:25:30 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-04-08 01:09:29 +0200 |
| commit | 539bfb579babbe5a14b405370ecc99b4ed53bc4e (patch) | |
| tree | 3ff8ef8e4a4d6796685b292f9a74f5fa1ecc7048 /arch/mips/math-emu/dp_sqrt.c | |
| parent | d19cf86e2e295b0406b5fa3a35609fb0a99f1bde (diff) | |
MIPS: math-emu: Don't pass qNaNs through quieting handlers
Don't call the `ieee754sp_nanxcpt' and `ieee754dp_nanxcpt' sNaN quieting
handlers for a qNaN supplied to floating-point format conversions or
SQRT.S/SQRT.D instructions, or for a qNaN produced out of a negative
operand supplied to SQRT.S/SQRT.D instructions. Return the qNaN right
away in these cases.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9687/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu/dp_sqrt.c')
| -rw-r--r-- | arch/mips/math-emu/dp_sqrt.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/mips/math-emu/dp_sqrt.c b/arch/mips/math-emu/dp_sqrt.c index 041bbb6124bb..0d8e7ffdba5e 100644 --- a/arch/mips/math-emu/dp_sqrt.c +++ b/arch/mips/math-emu/dp_sqrt.c @@ -44,7 +44,7 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x) switch (xc) { case IEEE754_CLASS_QNAN: /* sqrt(Nan) = Nan */ - return ieee754dp_nanxcpt(x); + return x; case IEEE754_CLASS_SNAN: ieee754_setcx(IEEE754_INVALID_OPERATION); @@ -58,7 +58,7 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x) if (xs) { /* sqrt(-Inf) = Nan */ ieee754_setcx(IEEE754_INVALID_OPERATION); - return ieee754dp_nanxcpt(ieee754dp_indef()); + return ieee754dp_indef(); } /* sqrt(+Inf) = Inf */ return x; @@ -71,7 +71,7 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x) if (xs) { /* sqrt(-x) = Nan */ ieee754_setcx(IEEE754_INVALID_OPERATION); - return ieee754dp_nanxcpt(ieee754dp_indef()); + return ieee754dp_indef(); } break; } |