[src/trunk]: src/lib/libc/string add strchrnul

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b27689cc0a42
branches:  trunk
changeset: 348265:b27689cc0a42
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Oct 12 20:01:12 2016 +0000

description:
add strchrnul

diffstat:

 lib/libc/string/Makefile.inc |   5 +++--
 lib/libc/string/strchr.3     |  27 ++++++++++++++++++++++-----
 2 files changed, 25 insertions(+), 7 deletions(-)

diffs (96 lines):

diff -r 2d0b5884720d -r b27689cc0a42 lib/libc/string/Makefile.inc
--- a/lib/libc/string/Makefile.inc      Wed Oct 12 18:43:40 2016 +0000
+++ b/lib/libc/string/Makefile.inc      Wed Oct 12 20:01:12 2016 +0000
@@ -1,5 +1,5 @@
 #      from: @(#)Makefile.inc  8.1 (Berkeley) 6/4/93
-#      $NetBSD: Makefile.inc,v 1.80 2014/09/24 18:16:37 christos Exp $
+#      $NetBSD: Makefile.inc,v 1.81 2016/10/12 20:01:12 christos Exp $
 
 # string sources
 .PATH: ${ARCHDIR}/string ${.CURDIR}/string
@@ -22,7 +22,7 @@
 SRCS+= explicit_memset.c consttime_memequal.c
 
 SRCS+= memccpy.c memcpy.c memmem.c memmove.c
-SRCS+= strchr.c strrchr.c
+SRCS+= strchr.c strrchr.c strchrnul.c
 SRCS+= popcount32.c popcount64.c
 
 # wide char
@@ -59,6 +59,7 @@
 MLINKS+=strlen.3 strnlen.3
 MLINKS+=strstr.3 strcasestr.3
 MLINKS+=strstr.3 strnstr.3
+MLINKS+=strchr.3 strchrnul.3
 MLINKS+=memchr.3 memrchr.3
 MLINKS+=strtok.3 strtok_r.3
 MLINKS+=strerror.3 strerror_r.3 strerror.3 perror.3 \
diff -r 2d0b5884720d -r b27689cc0a42 lib/libc/string/strchr.3
--- a/lib/libc/string/strchr.3  Wed Oct 12 18:43:40 2016 +0000
+++ b/lib/libc/string/strchr.3  Wed Oct 12 20:01:12 2016 +0000
@@ -30,13 +30,13 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     from: @(#)strchr.3     8.2 (Berkeley) 4/19/94
-.\"    $NetBSD: strchr.3,v 1.11 2003/08/07 16:43:49 agc Exp $
+.\"    $NetBSD: strchr.3,v 1.12 2016/10/12 20:01:12 christos Exp $
 .\"
-.Dd August 11, 2002
+.Dd October 12, 2016
 .Dt STRCHR 3
 .Os
 .Sh NAME
-.Nm strchr
+.Nm strchr, strchrnul
 .Nd locate character in string
 .Sh LIBRARY
 .Lb libc
@@ -44,10 +44,14 @@
 .In string.h
 .Ft char *
 .Fn strchr "const char *s" "int c"
+.Ft char *
+.Fn strchrnul "const char *s" "int c"
 .Sh DESCRIPTION
 The
 .Fn strchr
-function locates the first occurrence of
+and
+.Fn strchrnul
+functions locate the first occurrence of
 .Ar c
 in the string pointed to by
 .Ar s .
@@ -59,7 +63,9 @@
 is
 .Ql \e0 ,
 .Fn strchr
-locates the terminating
+and
+.Fn strchrnul
+locate the terminating
 .Ql \e0 .
 .Sh RETURN VALUES
 The function
@@ -67,6 +73,13 @@
 returns a pointer to the located character, or
 .Dv NULL
 if the character does not appear in the string.
+The function
+.Fn strchrnul
+returns a pointer to the located character, or
+the a pointer to the
+.Dv NUL
+terminating character of the string if the character does not appear
+in the string.
 .Sh EXAMPLES
 After the following call to
 .Fn strchr ,
@@ -96,3 +109,7 @@
 function
 conforms to
 .St -ansiC .
+.The
+.Fn strchrnul
+appeared in
+.Nx 8 .