60 lines
1.5 KiB
Groff
60 lines
1.5 KiB
Groff
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BSTRING(3) Minix Programmer's Manual BSTRING(3)
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NAME
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bstring, bcopy, bcmp, bzero, ffs - bit and byte string operations
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SYNOPSIS
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#include <sys/types.h>
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#include <string.h>
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#include <unistd.h>
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void bcopy(const void *src, void *dst, size_t length)
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int bcmp(const void *b1, const void *b2, size_t length)
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void bzero(void *dst, size_t length)
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int ffs(int i)
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DESCRIPTION
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The functions bcopy, bcmp, and bzero operate on variable length strings
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of bytes. They do not check for null bytes as the routines in string(3)
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do.
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Bcopy copies length bytes from string src to the string dst.
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Bcmp compares byte string b1 against byte string b2, returning zero if
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they are identical, non-zero otherwise. Both strings are assumed to be
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length bytes long.
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Bzero places length 0 bytes in the string b1.
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Ffs find the first bit set in the argument passed it and returns the
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index of that bit. Bits are numbered starting at 1. A return value of 0
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indicates the value passed is zero.
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BUGS
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The bcopy, bcmp, and bzero functions are obsolete; new code should use
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memmove, memcmp, and memset respectively.
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The bcopy routine takes parameters backwards from memcpy, memmove, and
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strcpy.
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5BSD May 15, 1985 1
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