diff options
| -rw-r--r-- | fpu/softfloat-specialize.h | 46 | ||||
| -rw-r--r-- | fpu/softfloat.h | 2 |
2 files changed, 48 insertions, 0 deletions
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h index bc6f0c1e5b..b1acc45aba 100644 --- a/fpu/softfloat-specialize.h +++ b/fpu/softfloat-specialize.h @@ -480,6 +480,29 @@ int floatx80_is_signaling_nan( floatx80 a ) } /*---------------------------------------------------------------------------- +| Returns a quiet NaN if the extended double-precision floating point value +| `a' is a signaling NaN; otherwise returns `a'. +*----------------------------------------------------------------------------*/ + +floatx80 floatx80_maybe_silence_nan( floatx80 a ) +{ + if (floatx80_is_signaling_nan(a)) { +#if SNAN_BIT_IS_ONE +# if defined(TARGET_MIPS) + a.low = floatx80_default_nan_low; + a.high = floatx80_default_nan_high; +# else +# error Rules for silencing a signaling NaN are target-specific +# endif +#else + a.low |= LIT64( 0xC000000000000000 ); + return a; +#endif + } + return a; +} + +/*---------------------------------------------------------------------------- | Returns the result of converting the extended double-precision floating- | point NaN `a' to the canonical NaN format. If `a' is a signaling NaN, the | invalid exception is raised. @@ -612,6 +635,29 @@ int float128_is_signaling_nan( float128 a ) } /*---------------------------------------------------------------------------- +| Returns a quiet NaN if the quadruple-precision floating point value `a' is +| a signaling NaN; otherwise returns `a'. +*----------------------------------------------------------------------------*/ + +float128 float128_maybe_silence_nan( float128 a ) +{ + if (float128_is_signaling_nan(a)) { +#if SNAN_BIT_IS_ONE +# if defined(TARGET_MIPS) + a.low = float128_default_nan_low; + a.high = float128_default_nan_high; +# else +# error Rules for silencing a signaling NaN are target-specific +# endif +#else + a.high |= LIT64( 0x0000800000000000 ); + return a; +#endif + } + return a; +} + +/*---------------------------------------------------------------------------- | Returns the result of converting the quadruple-precision floating-point NaN | `a' to the canonical NaN format. If `a' is a signaling NaN, the invalid | exception is raised. diff --git a/fpu/softfloat.h b/fpu/softfloat.h index 1f37877dbf..f2104c6c89 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -439,6 +439,7 @@ int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); int floatx80_is_quiet_nan( floatx80 ); int floatx80_is_signaling_nan( floatx80 ); +floatx80 floatx80_maybe_silence_nan( floatx80 ); floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); INLINE floatx80 floatx80_abs(floatx80 a) @@ -505,6 +506,7 @@ int float128_compare( float128, float128 STATUS_PARAM ); int float128_compare_quiet( float128, float128 STATUS_PARAM ); int float128_is_quiet_nan( float128 ); int float128_is_signaling_nan( float128 ); +float128 float128_maybe_silence_nan( float128 ); float128 float128_scalbn( float128, int STATUS_PARAM ); INLINE float128 float128_abs(float128 a) |