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libc headers: make <complex.h> work, add struct ipv6_mreq (#1100)

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1. `libc/isystem/complex.h` (included when you do `#include <complex.h>`)
   defines `_COMPLEX_H`, and then proceeds to include `libc/complex.h`,
   which contains the actual complex-related declarations. However, they
   are *also* guarded by `_COMPLEX_H` and hence effectively ignored.
   Fix this by changing `_COMPLEX_H` to `COSMOPOLITAN_LIBC_COMPLEX_H_`,
   which is consistent with what the other headers (such as `math.h`) do.
2. Cosmopolitan could only support IPv4 multicast requests for sockets,
   since a declaration for `struct ipv6_mreq` was missing. Add support
   for IPv6, too, by adding the missing declaration.
This commit is contained in:
Ivan Komarov 2024-02-05 23:22:56 +01:00 • committed by GitHub
parent c72904b2f6
commit d5225a693b
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4 changed files with 17 additions and 3 deletions
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12
libc/sock/struct/ipv6_mreq.h Normal file
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#ifndef COSMOPOLITAN_LIBC_SOCK_STRUCT_IPV6_MREQ_H_
#define COSMOPOLITAN_LIBC_SOCK_STRUCT_IPV6_MREQ_H_
#include "libc/sock/struct/sockaddr6.h"
COSMOPOLITAN_C_START_
struct ipv6_mreq {
struct in6_addr ipv6mr_multiaddr; /* IPv6 multicast address of group */
unsigned ipv6mr_interface; /* local interface */
};
COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_LIBC_SOCK_STRUCT_IPV6_MREQ_H_ */