s_subM.c File Reference

#include <stdint.h>
#include "platform.h"
#include "primitiveTypes.h"

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Functions
void	softfloat_subM (uint_fast8_t size_words, const uint32_t *aPtr, const uint32_t *bPtr, uint32_t *zPtr)

Function Documentation

softfloat_subM()

void softfloat_subM	(	uint_fast8_t	size_words,
		const uint32_t *	aPtr,
		const uint32_t *	bPtr,
		uint32_t *	zPtr )

Definition at line 44 of file s_subM.c.

{
    unsigned int index, lastIndex;
    uint_fast8_t borrow;
    uint32_t wordA, wordB;
 
    index = indexWordLo( size_words );
    lastIndex = indexWordHi( size_words );
    borrow = 0;
    for (;;) {
        wordA = aPtr[index];
        wordB = bPtr[index];
        zPtr[index] = wordA - wordB - borrow;
        if ( index == lastIndex ) break;
        borrow = borrow ? (wordA <= wordB) : (wordA < wordB);
        index += wordIncr;
    }
 
}