i32_to_f64.c File Reference

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

Include dependency graph for i32_to_f64.c:

Go to the source code of this file.

Functions
float64_t	i32_to_f64 (int32_t a)

Function Documentation

i32_to_f64()

float64_t i32_to_f64

(

int32_t

a

)

Definition at line 43 of file i32_to_f64.c.

{
    uint_fast64_t uiZ;
    bool sign;
    uint_fast32_t absA;
    int_fast8_t shiftDist;
    union ui64_f64 uZ;
 
    if ( ! a ) {
        uiZ = 0;
    } else {
        sign = (a < 0);
        absA = sign ? -(uint_fast32_t) a : (uint_fast32_t) a;
        shiftDist = softfloat_countLeadingZeros32( absA ) + 21;
        uiZ =
            packToF64UI(
                sign, 0x432 - shiftDist, (uint_fast64_t) absA<<shiftDist );
    }
    uZ.ui = uiZ;
    return uZ.f;
 
}