30 twobyte_memmem(const unsigned char *h, size_t k, const unsigned char *n)  in twobyte_memmem()  argument
33 	for (h+=2, k-=2; k; k--, hw = hw<<8 | *h++)  in twobyte_memmem()
39 threebyte_memmem(const unsigned char *h, size_t k, const unsigned char *n)  in threebyte_memmem()  argument
43 	for (h+=3, k-=3; k; k--, hw = (hw|*h++)<<8)  in threebyte_memmem()
49 fourbyte_memmem(const unsigned char *h, size_t k, const unsigned char *n)  in fourbyte_memmem()  argument
53 	for (h+=4, k-=4; k; k--, hw = hw<<8 | *h++)  in fourbyte_memmem()
72 	size_t i, ip, jp, k, p, ms, p0, mem, mem0;  in twoway_memmem()  local
81 	ip = -1; jp = 0; k = p = 1;  in twoway_memmem()
82 	while (jp+k<l) {  in twoway_memmem()
83 		if (n[ip+k] == n[jp+k]) {  in twoway_memmem()
84 			if (k == p) {  in twoway_memmem()
86 				k = 1;  in twoway_memmem()
87 			} else k++;  in twoway_memmem()
88 		} else if (n[ip+k] > n[jp+k]) {  in twoway_memmem()
89 			jp += k;  in twoway_memmem()
90 			k = 1;  in twoway_memmem()
94 			k = p = 1;  in twoway_memmem()
101 	ip = -1; jp = 0; k = p = 1;  in twoway_memmem()
102 	while (jp+k<l) {  in twoway_memmem()
103 		if (n[ip+k] == n[jp+k]) {  in twoway_memmem()
104 			if (k == p) {  in twoway_memmem()
106 				k = 1;  in twoway_memmem()
107 			} else k++;  in twoway_memmem()
108 		} else if (n[ip+k] < n[jp+k]) {  in twoway_memmem()
109 			jp += k;  in twoway_memmem()
110 			k = 1;  in twoway_memmem()
114 			k = p = 1;  in twoway_memmem()
134 			k = l-shift[h[l-1]];  in twoway_memmem()
135 			if (k) {  in twoway_memmem()
136 				if (k < mem) k = mem;  in twoway_memmem()
137 				h += k;  in twoway_memmem()
148 		for (k=MAX(ms+1,mem); k<l && n[k] == h[k]; k++);  in twoway_memmem()
149 		if (k < l) {  in twoway_memmem()
150 			h += k-ms;  in twoway_memmem()
155 		for (k=ms+1; k>mem && n[k-1] == h[k-1]; k--);  in twoway_memmem()
156 		if (k <= mem) return (char *)h;  in twoway_memmem()
163 memmem(const void *h0, size_t k, const void *n0, size_t l)  in memmem()  argument
171 	if (k<l) return 0;  in memmem()
174 	h = memchr(h0, *n, k);  in memmem()
176 	k -= h - (const unsigned char *)h0;  in memmem()
177 	if (k<l) return 0;  in memmem()
178 	if (l==2) return twobyte_memmem(h, k, n);  in memmem()
179 	if (l==3) return threebyte_memmem(h, k, n);  in memmem()
180 	if (l==4) return fourbyte_memmem(h, k, n);  in memmem()
182 	return twoway_memmem(h, h+k, n, l);  in memmem()