diff options
| author | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2011-11-07 09:24:30 +0100 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2011-11-07 09:24:30 +0100 |
| commit | 515d54433138596e81267237542bd9168b8cc787 (patch) | |
| tree | f2d6745268b788cc38d1b67deb32f71916b10fec /libc/stdlib | |
| parent | 84144d142cb9f041dd18285cb2ad9dbe6619b0a2 (diff) | |
stdlib: add qsort_r
GNU extension like qsort but takes a 3 parameter comparision function.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc/stdlib')
| -rw-r--r-- | libc/stdlib/Makefile.in | 2 | ||||
| -rw-r--r-- | libc/stdlib/qsort_r.c | 7 | ||||
| -rw-r--r-- | libc/stdlib/stdlib.c | 23 |
3 files changed, 26 insertions, 6 deletions
diff --git a/libc/stdlib/Makefile.in b/libc/stdlib/Makefile.in index 760ccf7e6..73e5462f6 100644 --- a/libc/stdlib/Makefile.in +++ b/libc/stdlib/Makefile.in @@ -29,7 +29,7 @@ CSRC-$(UCLIBC_SUSV3_LEGACY) += mktemp.c # multi source stdlib.c CSRC-y += abs.c labs.c atoi.c atol.c strtol.c strtoul.c _stdlib_strto_l.c \ - qsort.c bsearch.c \ + qsort.c qsort_r.c bsearch.c \ llabs.c atoll.c strtoll.c strtoull.c _stdlib_strto_ll.c # (aliases) strtoq.o strtouq.o CSRC-$(UCLIBC_HAS_FLOATS) += atof.c diff --git a/libc/stdlib/qsort_r.c b/libc/stdlib/qsort_r.c new file mode 100644 index 000000000..1db270e62 --- /dev/null +++ b/libc/stdlib/qsort_r.c @@ -0,0 +1,7 @@ +/* Copyright (C) 2004-2006 Manuel Novoa III <mjn3@uclibc.org> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#define L_qsort_r +#include "stdlib.c" diff --git a/libc/stdlib/stdlib.c b/libc/stdlib/stdlib.c index cd9a0cac6..9e8c347fd 100644 --- a/libc/stdlib/stdlib.c +++ b/libc/stdlib/stdlib.c @@ -784,7 +784,7 @@ void *bsearch(const void *key, const void *base, size_t /* nmemb */ high, #endif /**********************************************************************/ -#ifdef L_qsort +#ifdef L_qsort_r /* This code is derived from a public domain shell sort routine by * Ray Gardner and found in Bob Stout's snippets collection. The @@ -794,10 +794,11 @@ void *bsearch(const void *key, const void *base, size_t /* nmemb */ high, * calculation, as well as to reduce the generated code size with * bcc and gcc. */ -void qsort(void *base, +void qsort_r(void *base, size_t nel, size_t width, - int (*comp)(const void *, const void *)) + __compar_d_fn_t comp, + void *arg) { size_t wgap, i, j, k; char tmp; @@ -823,7 +824,7 @@ void qsort(void *base, j -= wgap; a = j + ((char *)base); b = a + wgap; - if ((*comp)(a, b) <= 0) { + if ((*comp)(a, b, arg) <= 0) { break; } k = width; @@ -839,7 +840,7 @@ void qsort(void *base, } while (wgap); } } -libc_hidden_def(qsort) +libc_hidden_def(qsort_r) /* ---------- original snippets version below ---------- */ @@ -886,6 +887,18 @@ void ssort(void *base, #endif #endif + +#ifdef L_qsort +void qsort(void *base, + size_t nel, + size_t width, + __compar_fn_t comp) +{ + return qsort_r (base, nel, width, (__compar_d_fn_t) comp, NULL); +} +libc_hidden_def(qsort) +#endif + /**********************************************************************/ #ifdef L__stdlib_mb_cur_max |