42 lines
772 B
C
42 lines
772 B
C
/*
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* Written by Manuel Bouyer <bouyer@netbsd.org>.
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* Public domain.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#if defined(LIBC_SCCS) && !defined(lint)
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static char *rcsid = "$NetBSD: bswap32.c,v 1.1 1997/10/09 15:42:33 bouyer Exp $";
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static char *rcsid = "$NetBSD: bswap64.c,v 1.1 1997/10/09 15:42:33 bouyer Exp $";
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#endif
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#include <sys/types.h>
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#undef bswap32
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#undef bswap64
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u_int32_t bswap32(u_int32_t x);
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u_int64_t bswap64(u_int64_t x);
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u_int32_t
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bswap32(u_int32_t x)
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{
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return ((x << 24) & 0xff000000 ) |
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((x << 8) & 0x00ff0000 ) |
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((x >> 8) & 0x0000ff00 ) |
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((x >> 24) & 0x000000ff );
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}
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u_int64_t
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bswap64(u_int64_t x)
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{
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u_int32_t *p = (u_int32_t*)&x;
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u_int32_t t;
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t = bswap32(p[0]);
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p[0] = bswap32(p[1]);
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p[1] = t;
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return x;
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}
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