historical/m0-applesillicon.git/xnu-qemu-arm64-5.1.0/roms/openbios/libgcc/__udivmoddi4.c

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2024-01-16 11:20:27 -06:00
#include "libgcc.h"
uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem_p)
{
uint64_t quot = 0, qbit = 1;
if ( den == 0 ) {
__divide_error();
return 0; /* If trap returns... */
}
/* Left-justify denominator and count shift */
while ( (int64_t)den >= 0 ) {
den <<= 1;
qbit <<= 1;
}
while ( qbit ) {
if ( den <= num ) {
num -= den;
quot += qbit;
}
den >>= 1;
qbit >>= 1;
}
if ( rem_p )
*rem_p = num;
return quot;
}