32 lines
509 B
C
32 lines
509 B
C
#include <stdint.h>
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uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem_p)
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{
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uint64_t quot = 0, qbit = 1;
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if ( den == 0 ) {
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asm volatile("int $0");
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return 0; /* If trap returns... */
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}
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/* Left-justify denominator and count shift */
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while ( (int64_t)den >= 0 ) {
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den <<= 1;
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qbit <<= 1;
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}
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while ( qbit ) {
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if ( den <= num ) {
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num -= den;
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quot += qbit;
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}
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den >>= 1;
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qbit >>= 1;
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}
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if ( rem_p )
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*rem_p = num;
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return quot;
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}
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