i32_to_f16.c File Reference

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

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Functions
float16_t	i32_to_f16 (int32_t a)

Function Documentation

i32_to_f16()

float16_t i32_to_f16

(

int32_t

a

)

Definition at line 43 of file i32_to_f16.c.

{
    bool sign;
    uint_fast32_t absA;
    int_fast8_t shiftDist;
    union ui16_f16 u;
    uint_fast16_t sig;
 
    sign = (a < 0);
    absA = sign ? -(uint_fast32_t) a : (uint_fast32_t) a;
    shiftDist = softfloat_countLeadingZeros32( absA ) - 21;
    if ( 0 <= shiftDist ) {
        u.ui =
            a ? packToF16UI(
                    sign, 0x18 - shiftDist, (uint_fast16_t) absA<<shiftDist )
                : 0;
        return u.f;
    } else {
        shiftDist += 4;
        sig =
            (shiftDist < 0)
                ? absA>>(-shiftDist)
                      | ((uint32_t) (absA<<(shiftDist & 31)) != 0)
                : (uint_fast16_t) absA<<shiftDist;
        return softfloat_roundPackToF16( sign, 0x1C - shiftDist, sig );
    }
 
}

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