xref: /aosp_15_r20/external/musl/src/string/wmemmove.c (revision c9945492fdd68bbe62686c5b452b4dc1be3f8453)
1*c9945492SAndroid Build Coastguard Worker #include <wchar.h>
2*c9945492SAndroid Build Coastguard Worker #include <stdint.h>
3*c9945492SAndroid Build Coastguard Worker 
wmemmove(wchar_t * d,const wchar_t * s,size_t n)4*c9945492SAndroid Build Coastguard Worker wchar_t *wmemmove(wchar_t *d, const wchar_t *s, size_t n)
5*c9945492SAndroid Build Coastguard Worker {
6*c9945492SAndroid Build Coastguard Worker 	wchar_t *d0 = d;
7*c9945492SAndroid Build Coastguard Worker 	if (d == s) return d;
8*c9945492SAndroid Build Coastguard Worker 	if ((uintptr_t)d-(uintptr_t)s < n * sizeof *d)
9*c9945492SAndroid Build Coastguard Worker 		while (n--) d[n] = s[n];
10*c9945492SAndroid Build Coastguard Worker 	else
11*c9945492SAndroid Build Coastguard Worker 		while (n--) *d++ = *s++;
12*c9945492SAndroid Build Coastguard Worker 	return d0;
13*c9945492SAndroid Build Coastguard Worker }
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