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target-xtensa: specialize softfloat NaN rules

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NaN propagation rule: leftmost NaN in the expression gets propagated to
the result.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Max Filippov 2012-09-19 04:23:53 +04:00 • committed by Blue Swirl
parent 10f6ca0340
commit b81fe822da
1 changed files with 3 additions and 2 deletions
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5
fpu/softfloat-specialize.h
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@ -64,7 +64,8 @@ const float16 float16_default_nan = const_float16(0xFE00);
*----------------------------------------------------------------------------*/ *----------------------------------------------------------------------------*/
#if defined(TARGET_SPARC) #if defined(TARGET_SPARC)
const float32 float32_default_nan = const_float32(0x7FFFFFFF); const float32 float32_default_nan = const_float32(0x7FFFFFFF);
#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) #elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) || \
defined(TARGET_XTENSA)
const float32 float32_default_nan = const_float32(0x7FC00000); const float32 float32_default_nan = const_float32(0x7FC00000);
#elif SNAN_BIT_IS_ONE #elif SNAN_BIT_IS_ONE
const float32 float32_default_nan = const_float32(0x7FBFFFFF); const float32 float32_default_nan = const_float32(0x7FBFFFFF);
@ -403,7 +404,7 @@ static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN,
return 1; return 1;
} }
} }
#elif defined(TARGET_PPC) #elif defined(TARGET_PPC) || defined(TARGET_XTENSA)
static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN, static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN,
flag aIsLargerSignificand) flag aIsLargerSignificand)
{ {