diff options
Diffstat (limited to 'fpu')
| -rw-r--r-- | fpu/softfloat.c | 44 | ||||
| -rw-r--r-- | fpu/softfloat.h | 2 |
2 files changed, 46 insertions, 0 deletions
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index e30f22f918..3ec1e0de18 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -5421,6 +5421,50 @@ int float ## s ## _compare_quiet( float ## s a, float ## s b STATUS_PARAM ) \ COMPARE(32, 0xff) COMPARE(64, 0x7ff) +INLINE int float128_compare_internal( float128 a, float128 b, + int is_quiet STATUS_PARAM ) +{ + flag aSign, bSign; + + if (( ( extractFloat128Exp( a ) == 0x7fff ) && + ( extractFloat128Frac0( a ) | extractFloat128Frac1( a ) ) ) || + ( ( extractFloat128Exp( b ) == 0x7fff ) && + ( extractFloat128Frac0( b ) | extractFloat128Frac1( b ) ) )) { + if (!is_quiet || + float128_is_signaling_nan( a ) || + float128_is_signaling_nan( b ) ) { + float_raise( float_flag_invalid STATUS_VAR); + } + return float_relation_unordered; + } + aSign = extractFloat128Sign( a ); + bSign = extractFloat128Sign( b ); + if ( aSign != bSign ) { + if ( ( ( ( a.high | b.high )<<1 ) | a.low | b.low ) == 0 ) { + /* zero case */ + return float_relation_equal; + } else { + return 1 - (2 * aSign); + } + } else { + if (a.low == b.low && a.high == b.high) { + return float_relation_equal; + } else { + return 1 - 2 * (aSign ^ ( lt128( a.high, a.low, b.high, b.low ) )); + } + } +} + +int float128_compare( float128 a, float128 b STATUS_PARAM ) +{ + return float128_compare_internal(a, b, 0 STATUS_VAR); +} + +int float128_compare_quiet( float128 a, float128 b STATUS_PARAM ) +{ + return float128_compare_internal(a, b, 1 STATUS_VAR); +} + /* Multiply A by 2 raised to the power N. */ float32 float32_scalbn( float32 a, int n STATUS_PARAM ) { diff --git a/fpu/softfloat.h b/fpu/softfloat.h index 84cffdd5d5..5f95d061e5 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -415,6 +415,8 @@ int float128_lt( float128, float128 STATUS_PARAM ); int float128_eq_signaling( float128, float128 STATUS_PARAM ); int float128_le_quiet( float128, float128 STATUS_PARAM ); int float128_lt_quiet( float128, float128 STATUS_PARAM ); +int float128_compare( float128, float128 STATUS_PARAM ); +int float128_compare_quiet( float128, float128 STATUS_PARAM ); int float128_is_nan( float128 ); int float128_is_signaling_nan( float128 ); float128 float128_scalbn( float128, int STATUS_PARAM ); |