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239c2bf93e
* libc/misc/unctrl.c: Replace FUNCTION description.
* libc/signal/signal.c: Remove documentation for raise and _raise_r.
* libc/stdio/getdelim.c: Fix spelling errors.
* libc/stdio/getw.c: Put RETURNS on a separate line. Fix punctuation.
* libc/stdio/putw.c: Likewise.
* libc/stdlib/a64l.c: Fix formatting, spelling and punctuation in
documentation.
* libc/stdlib/assert.c: Do not capitalize FUNCTION description.
* libc/stdlib/efgcvt.c: Add spaces to FUNCTION description.
* libc/stdlib/envlock.c: Use em-dash in FUNCTION description.
* libc/stdlib/mlock.c: Likewise.
* libc/stdlib/mstats.c: Likewise.
* libc/time/tzlock.c: Likewise.
* libc/stdlib/rand.c: Use "multi-threaded" and "thread-safe" in NOTES.
* libc/stdlib/rand48.c: Remove extra space in FUNCTION description
and hyphenate "pseudo-random".
* libc/string/bcmp.c: Remove extra blank lines in documentation.
* libc/string/strncat.c: Likewise.
* libc/string/memchr.c: Remove extra ">" character in documentation.
* libc/string/strcspn.c: Use "characters" instead of "chars".
* libc/string/strpbrk.c: Likewise.
* libc/string/strerror_r.c: Capitalize "GNU".
* libc/string/strnlen.c: Likewise.
* libc/string/strtok.c: Fix formatting, spelling and punctuation in
documentation. Use "multi-threaded" and "thread-safe" in NOTES.
* libc/string/wcscat.c: Split PORTABILITY into two paragraphs.
* libc/string/wcschr.c: Likewise.
* libc/string/wcscmp.c: Likewise.
* libc/string/wcscpy.c: Likewise.
* libc/string/wcscspn.c: Likewise.
* libc/string/wcslen.c: Likewise.
* libc/string/wcsncat.c: Likewise.
* libc/string/wcsncmp.c: Likewise.
* libc/string/wcsncpy.c: Likewise.
* libc/string/wcsnlen.c: Likewise.
* libc/string/wcspbrk.c: Likewise.
* libc/string/wcsrchr.c: Likewise.
* libc/string/wcsspn.c: Likewise.
* libc/string/wmemchr.c: Likewise.
* libc/string/wmemcmp.c: Likewise.
* libc/string/wmemcpy.c: Likewise.
* libc/string/wmemset.c: Likewise.
* libc/string/wmemmove.c: Likewise. Also fix FUNCTION description.
* libc/string/wcswidth.c: Formatting and punctuation in documentation.
* libc/string/wcwidth.c: Likewise.
* libm/common/s_modf.c: Remove extra period from documentation.
* libm/math/s_isnan.c: Fix formatting, grammar and punctuation in
documentation.
* libm/mathfp/s_isnan.c: Likewise.
* libm/math/s_ldexp.c: Fix punctuation.
* libm/mathfp/s_ldexp.c: Likewise.
* libm/math/w_log.c: Likewise.
* libm/mathfp/s_logarithm.c: Likewise.
* libm/math/w_j0.c: Add spaces to FUNCTION description.
* libm/mathfp/w_jn.c: Likewise.
50 lines
873 B
C
50 lines
873 B
C
/*
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FUNCTION
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<<strnlen>>---character string length
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INDEX
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strnlen
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ANSI_SYNOPSIS
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#include <string.h>
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size_t strnlen(const char *<[str]>, size_t <[n]>);
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TRAD_SYNOPSIS
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#include <string.h>
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size_t strnlen(<[str]>, <[n]>)
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char *<[src]>;
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size_t <[n]>;
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DESCRIPTION
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The <<strnlen>> function works out the length of the string
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starting at <<*<[str]>>> by counting chararacters until it
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reaches a NUL character or the maximum: <[n]> number of
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characters have been inspected.
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RETURNS
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<<strnlen>> returns the character count or <[n]>.
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PORTABILITY
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<<strnlen>> is a GNU extension.
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<<strnlen>> requires no supporting OS subroutines.
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*/
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#undef __STRICT_ANSI__
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#include <_ansi.h>
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#include <string.h>
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size_t
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_DEFUN (strnlen, (str, n),
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_CONST char *str _AND
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size_t n)
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{
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_CONST char *start = str;
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while (*str && n-- > 0)
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str++;
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return str - start;
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}
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