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16 lines
443 B
C

24 years ago
#include "byte.h"
/* byte_copyr copies in[len-1] to out[len-1], in[len-2] to out[len-2],
* ... and in[0] to out[0] */
void byte_copyr(void* out, unsigned int len, const void* in) {
register char* s=out+len;
register const char* t=in;
register const char* u=t+len;
for (;;) {
if (t>=u) break; --u; --s; *s=*u;
if (t>=u) break; --u; --s; *s=*u;
if (t>=u) break; --u; --s; *s=*u;
if (t>=u) break; --u; --s; *s=*u;
}
}