f64_sub.c File Reference

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

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Functions
float64_t	f64_sub (float64_t a, float64_t b)

Function Documentation

f64_sub()

float64_t f64_sub	(	float64_t	a,
		float64_t	b )

Definition at line 43 of file f64_sub.c.

{
    union ui64_f64 uA;
    uint_fast64_t uiA;
    bool signA;
    union ui64_f64 uB;
    uint_fast64_t uiB;
    bool signB;
#if ! defined INLINE_LEVEL || (INLINE_LEVEL < 2)
    float64_t (*magsFuncPtr)( uint_fast64_t, uint_fast64_t, bool );
#endif
 
    uA.f = a;
    uiA = uA.ui;
    signA = signF64UI( uiA );
    uB.f = b;
    uiB = uB.ui;
    signB = signF64UI( uiB );
#if defined INLINE_LEVEL && (2 <= INLINE_LEVEL)
    if ( signA == signB ) {
        return softfloat_subMagsF64( uiA, uiB, signA );
    } else {
        return softfloat_addMagsF64( uiA, uiB, signA );
    }
#else
    magsFuncPtr =
        (signA == signB) ? softfloat_subMagsF64 : softfloat_addMagsF64;
    return (*magsFuncPtr)( uiA, uiB, signA );
#endif
 
}

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