s_addCarryM.c File Reference

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

Include dependency graph for s_addCarryM.c:

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Functions
uint_fast8_t	softfloat_addCarryM (uint_fast8_t size_words, const uint32_t *aPtr, const uint32_t *bPtr, uint_fast8_t carry, uint32_t *zPtr)

Function Documentation

softfloat_addCarryM()

uint_fast8_t softfloat_addCarryM	(	uint_fast8_t	size_words,
		const uint32_t *	aPtr,
		const uint32_t *	bPtr,
		uint_fast8_t	carry,
		uint32_t *	zPtr )

Definition at line 44 of file s_addCarryM.c.

{
    unsigned int index, lastIndex;
    uint32_t wordA, wordZ;
 
    index = indexWordLo( size_words );
    lastIndex = indexWordHi( size_words );
    for (;;) {
        wordA = aPtr[index];
        wordZ = wordA + bPtr[index] + carry;
        zPtr[index] = wordZ;
        if ( wordZ != wordA ) carry = (wordZ < wordA);
        if ( index == lastIndex ) break;
        index += wordIncr;
    }
    return carry;
 
}