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/* See LICENSE file for copyright and license details. */
#include "internals.h"
void
zxor(z_t a, z_t b, z_t c)
{
size_t n, m, bn, cn;
const zahl_char_t *restrict bc;
const zahl_char_t *restrict cc;
if (unlikely(zzero(b))) {
SET(a, c);
return;
} else if (unlikely(zzero(c))) {
SET(a, b);
return;
}
bn = b->used;
bc = b->chars;
cn = c->used;
cc = c->chars;
MIN_MAX_1(n, m, bn, cn);
ENSURE_SIZE(a, m);
if (a == b) {
ZMEM_OP(a->chars, a->chars, cc, n, ^);
if (a->used < cn)
zmemcpy_range(a->chars, cc, n, m);
} else if (unlikely(a == c)) {
ZMEM_OP(a->chars, b->chars, cc, n, ^);
if (a->used < bn)
zmemcpy_range(a->chars, bc, n, m);
} else if (m == bn) {
ZMEM_OP(a->chars, c->chars, b->chars, n, ^);
zmemcpy_range(a->chars, b->chars, n, m);
} else {
ZMEM_OP(a->chars, b->chars, c->chars, n, ^);
zmemcpy_range(a->chars, c->chars, n, m);
}
a->used = m;
TRIM_AND_SIGN(a, 1 - 2 * ((zsignum(b) ^ zsignum(c)) < 0));
}
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