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add missing IN6_ARE_ADDR_EQUAL

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written to avoid multiple conditional jumps and avoid ugly repetitive
lines in the header file.
This commit is contained in:
Rich Felker 2012-05-11 11:05:41 -04:00
parent e700e59a90
commit b47fdcdef8
1 changed files with 5 additions and 0 deletions
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5
include/netinet/in.h
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@ -138,6 +138,11 @@ uint16_t ntohs(uint16_t);
#define IN6_IS_ADDR_MC_GLOBAL(a) \
(IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0xe))
#define __ARE_4_EQUAL(a,b) \
(!( 0[a]-0[b] | 1[a]-1[b] | 2[a]-2[b] | 3[a]-3[b] ))
#define IN6_ARE_ADDR_EQUAL(a,b) \
__ARE_4_EQUAL((const uint32_t *)(a), (const uint32_t *)(b))
#define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
#define IN_CLASSA_NET 0xff000000
#define IN_CLASSA_NSHIFT 24