+++ /dev/null
-
-#include <stdbool.h>
-#include <stdint.h>
-#include "platform.h"
-#include "internals.h"
-#include "softfloat.h"
-
-int_fast32_t
- softfloat_roundPackToI32(
- bool sign, uint_fast64_t sig, int_fast8_t roundingMode, bool exact )
-{
- bool roundNearestEven;
- int roundIncrement, roundBits;
- uint_fast32_t sig32;
- union { uint32_t ui; int32_t i; } uZ;
- int_fast32_t z;
-
- roundNearestEven = ( roundingMode == softfloat_round_nearest_even );
- roundIncrement = 0x40;
- if (
- ! roundNearestEven
- && ( roundingMode != softfloat_round_nearest_maxMag )
- ) {
- roundIncrement =
- ( roundingMode == softfloat_round_minMag )
- || ( roundingMode
- == ( sign ? softfloat_round_max : softfloat_round_min ) )
- ? 0
- : 0x7F;
- }
- roundBits = sig & 0x7F;
- sig += roundIncrement;
- if ( sig & UINT64_C( 0xFFFFFF8000000000 ) ) goto invalid;
- sig32 = sig>>7;
- sig32 &= ~ ( ! ( roundBits ^ 0x40 ) & roundNearestEven );
- uZ.ui = sign ? - sig32 : sig32;
- z = uZ.i;
- if ( z && ( ( z < 0 ) ^ sign ) ) goto invalid;
- if ( exact && roundBits ) {
- softfloat_exceptionFlags |= softfloat_flag_inexact;
- }
- return z;
- invalid:
- softfloat_raiseFlags( softfloat_flag_invalid );
- return sign ? -0x7FFFFFFF - 1 : 0x7FFFFFFF;
-
-}
-