ia64/lib/checksum.c

22 	/* add up 32-bit words for 33 bits */  in from64to16()
23 	x = (x & 0xffffffff) + (x >> 32);  in from64to16()
24 	/* add up 16-bit and 17-bit words for 17+c bits */  in from64to16()
26 	/* add up 16-bit and 2-bit for 16+c bit */  in from64to16()
35  * returns a 16-bit checksum, already complemented.
57 	/* Fold down to 32-bits so we don't lose in the typedef-less network stack.  */  in csum_tcpudp_nofold()
59 	result = (result & 0xffffffff) + (result >> 32);  in csum_tcpudp_nofold()
60 	/* 33 to 32 */  in csum_tcpudp_nofold()
61 	result = (result & 0xffffffff) + (result >> 32);  in csum_tcpudp_nofold()
70  * and adds in "sum" (32-bit)
72  * returns a 32-bit number suitable for feeding into itself
78  * it's best to have buff aligned on a 32-bit boundary
86 	/* 32+c bits -> 32 bits */  in csum_partial()
87 	result = (result & 0xffffffff) + (result >> 32);  in csum_partial()