git: purgatorio

ref: 09cf3c0ae6c0fed01e32a149f4668b7a7d52944b
dir: /libkern/memccpy.c/

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#include	<lib9.h>

void*
memccpy(void *a1, void *a2, int c, ulong n)
{
	uchar *s1, *s2;

	s1 = a1;
	s2 = a2;
	c &= 0xFF;
	while(n > 0) {
		if((*s1++ = *s2++) == c)
			return s1;
		n--;
	}
	return 0;
}