i64_to_f32.c File Reference

#include <stdbool.h>
#include <stdint.h>
#include "platform.h"
#include "internals.h"
#include "softfloat.h"

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Functions
float32_t	i64_to_f32 (int64_t a)

Function Documentation

i64_to_f32()

float32_t i64_to_f32

(

int64_t

a

)

Definition at line 43 of file i64_to_f32.c.

{
    bool sign;
    uint_fast64_t absA;
    int_fast8_t shiftDist;
    union ui32_f32 u;
    uint_fast32_t sig;
 
    sign = (a < 0);
    absA = sign ? -(uint_fast64_t) a : (uint_fast64_t) a;
    shiftDist = softfloat_countLeadingZeros64( absA ) - 40;
    if ( 0 <= shiftDist ) {
        u.ui =
            a ? packToF32UI(
                    sign, 0x95 - shiftDist, (uint_fast32_t) absA<<shiftDist )
                : 0;
        return u.f;
    } else {
        shiftDist += 7;
        sig =
            (shiftDist < 0)
                ? softfloat_shortShiftRightJam64( absA, -shiftDist )
                : (uint_fast32_t) absA<<shiftDist;
        return softfloat_roundPackToF32( sign, 0x9C - shiftDist, sig );
    }
 
}

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