f16_to_f128M.c File Reference

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

Include dependency graph for f16_to_f128M.c:

Go to the source code of this file.

Functions
void	f16_to_f128M (float16_t a, float128_t *zPtr)

Function Documentation

f16_to_f128M()

void f16_to_f128M	(	float16_t	a,
		float128_t *	zPtr )

Definition at line 55 of file f16_to_f128M.c.

{
    uint32_t *zWPtr;
    union ui16_f16 uA;
    uint16_t uiA;
    bool sign;
    int_fast8_t exp;
    uint16_t frac;
    struct commonNaN commonNaN;
    uint32_t uiZ96;
    struct exp8_sig16 normExpSig;
 
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    zWPtr = (uint32_t *) zPtr;
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    uA.f = a;
    uiA = uA.ui;
    sign = signF16UI( uiA );
    exp  = expF16UI( uiA );
    frac = fracF16UI( uiA );
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    if ( exp == 0x1F ) {
        if ( frac ) {
            softfloat_f16UIToCommonNaN( uiA, &commonNaN );
            softfloat_commonNaNToF128M( &commonNaN, zWPtr );
            return;
        }
        uiZ96 = packToF128UI96( sign, 0x7FFF, 0 );
        goto uiZ;
    }
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    if ( ! exp ) {
        if ( ! frac ) {
            uiZ96 = packToF128UI96( sign, 0, 0 );
            goto uiZ;
        }
        normExpSig = softfloat_normSubnormalF16Sig( frac );
        exp = normExpSig.exp - 1;
        frac = normExpSig.sig;
    }
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    uiZ96 = packToF128UI96( sign, exp + 0x3FF0, (uint32_t) frac<<6 );
 uiZ:
    zWPtr[indexWord( 4, 3 )] = uiZ96;
    zWPtr[indexWord( 4, 2 )] = 0;
    zWPtr[indexWord( 4, 1 )] = 0;
    zWPtr[indexWord( 4, 0 )] = 0;
 
}

Here is the call graph for this function: