path: root/src/include/stdlib.h
diff options
author√Črico Nogueira <>2021-03-09 18:02:13 -0300
committerRich Felker <>2021-09-23 20:09:22 -0400
commitb76f37fd5625d038141b52184956fb4b7838e9a5 (patch)
tree8375a3587dcf9c921cedb4858f4c6d2400f909cd /src/include/stdlib.h
parent7be59733d71ada3a32a98622507399253f1d5e48 (diff)
add qsort_r and make qsort a wrapper around it
we make qsort a wrapper by providing a wrapper_cmp function that uses the extra argument as a function pointer. should be optimized to a tail call on most architectures, as long as it's built with -fomit-frame-pointer, so the performance impact should be minimal. to keep the git history clean, for now qsort_r is implemented in qsort.c and qsort is implemented in qsort_nr.c. qsort.c also received a few trivial cleanups, including replacing (*cmp)() calls with cmp(). qsort_nr.c contains only wrapper_cmp and qsort as a qsort_r wrapper itself.
Diffstat (limited to 'src/include/stdlib.h')
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/stdlib.h b/src/include/stdlib.h
index e9da2015..812b04de 100644
--- a/src/include/stdlib.h
+++ b/src/include/stdlib.h
@@ -8,6 +8,7 @@ hidden void __env_rm_add(char *, char *);
hidden int __mkostemps(char *, int, int);
hidden int __ptsname_r(int, char *, size_t);
hidden char *__randname(char *);
+hidden void __qsort_r (void *, size_t, size_t, int (*)(const void *, const void *, void *), void *);
hidden void *__libc_malloc(size_t);
hidden void *__libc_malloc_impl(size_t);