diff options
Diffstat (limited to 'lib/stdlib')
| -rw-r--r-- | lib/stdlib/std.c | 4 | ||||
| -rw-r--r-- | lib/stdlib/strcmp.c | 51 | ||||
| -rw-r--r-- | lib/stdlib/strncmp.c | 52 |
3 files changed, 106 insertions, 1 deletions
diff --git a/lib/stdlib/std.c b/lib/stdlib/std.c index ee308b0e..46087549 100644 --- a/lib/stdlib/std.c +++ b/lib/stdlib/std.c @@ -29,7 +29,7 @@ */ -// Include the various implemented functions +/* Include the various implemented functions */ #include "abort.c" #include "assert.c" #include "mem.c" @@ -37,5 +37,7 @@ #include "putchar.c" #include "puts.c" #include "strchr.c" +#include "strcmp.c" #include "strlen.c" +#include "strncmp.c" #include "subr_prf.c" diff --git a/lib/stdlib/strcmp.c b/lib/stdlib/strcmp.c new file mode 100644 index 00000000..1d26f2bd --- /dev/null +++ b/lib/stdlib/strcmp.c @@ -0,0 +1,51 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions copyright (c) 2014, ARM Limited and Contributors. + * All rights reserved. + */ + +#include <sys/cdefs.h> +#include <string.h> + +/* + * Compare strings. + */ +int +strcmp(const char *s1, const char *s2) +{ + while (*s1 == *s2++) + if (*s1++ == '\0') + return 0; + return *(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1); +} diff --git a/lib/stdlib/strncmp.c b/lib/stdlib/strncmp.c new file mode 100644 index 00000000..f45f4a22 --- /dev/null +++ b/lib/stdlib/strncmp.c @@ -0,0 +1,52 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions copyright (c) 2014, ARM Limited and Contributors. + * All rights reserved. + */ + +#include <sys/cdefs.h> +#include <string.h> + +int +strncmp(const char *s1, const char *s2, size_t n) +{ + + if (n == 0) + return 0; + do { + if (*s1 != *s2++) + return (*(const unsigned char *)s1 - + *(const unsigned char *)(s2 - 1)); + if (*s1++ == '\0') + break; + } while (--n != 0); + return 0; +} |