diff options
Diffstat (limited to 'fpu/softfloat.c')
| -rw-r--r-- | fpu/softfloat.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 5dbfa81e43..52e2db121c 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -1164,6 +1164,27 @@ float32 int64_to_float32( int64 a STATUS_PARAM ) } +float64 uint64_to_float32( uint64 a STATUS_PARAM ) +{ + int8 shiftCount; + + if ( a == 0 ) return 0; + shiftCount = countLeadingZeros64( a ) - 40; + if ( 0 <= shiftCount ) { + return packFloat32( 1 > 0, 0x95 - shiftCount, a<<shiftCount ); + } + else { + shiftCount += 7; + if ( shiftCount < 0 ) { + shift64RightJamming( a, - shiftCount, &a ); + } + else { + a <<= shiftCount; + } + return roundAndPackFloat32( 1 > 0, 0x9C - shiftCount, a STATUS_VAR ); + } +} + /*---------------------------------------------------------------------------- | Returns the result of converting the 64-bit two's complement integer `a' | to the double-precision floating-point format. The conversion is performed @@ -1183,6 +1204,13 @@ float64 int64_to_float64( int64 a STATUS_PARAM ) } +float64 uint64_to_float64( uint64 a STATUS_PARAM ) +{ + if ( a == 0 ) return 0; + return normalizeRoundAndPackFloat64( 0, 0x43C, a STATUS_VAR ); + +} + #ifdef FLOATX80 /*---------------------------------------------------------------------------- @@ -5282,6 +5310,26 @@ unsigned int float64_to_uint32_round_to_zero( float64 a STATUS_PARAM ) return res; } +uint64_t float64_to_uint64 (float64 a STATUS_PARAM) +{ + int64_t v; + + v = int64_to_float64(INT64_MIN STATUS_VAR); + v = float64_to_int64((a + v) STATUS_VAR); + + return v - INT64_MIN; +} + +uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM) +{ + int64_t v; + + v = int64_to_float64(INT64_MIN STATUS_VAR); + v = float64_to_int64_round_to_zero((a + v) STATUS_VAR); + + return v - INT64_MIN; +} + #define COMPARE(s, nan_exp) \ INLINE int float ## s ## _compare_internal( float ## s a, float ## s b, \ int is_quiet STATUS_PARAM ) \ |