add qsort_r for unix, and qsort and qsort_s for windows

Author: folkertdev

libc-test/semver/apple.txt

@@ -2121,6 +2121,7 @@ ptrace
 pututxline
 pwritev
 qsort
+qsort_r
 querylocale
 quotactl
 radvisory

libc-test/semver/freebsd.txt

@@ -2241,6 +2241,7 @@ ptsname_r
 pututxline
 pwritev
 qsort
+qsort_r
 querylocale
 rallocx
 rand

libc-test/semver/netbsd.txt

@@ -1535,6 +1535,7 @@ ptrace_siginfo
 pututxline
 pwritev
 qsort
+qsort_r
 rand
 readdir_r
 readlinkat

libc-test/semver/windows.txt

@@ -275,6 +275,8 @@ putchar
 putenv
 putenv_s
 puts
+qsort
+qsort_s
 raise
 rand
 read

src/unix/bsd/apple/mod.rs

@@ -5926,6 +5926,14 @@ extern "C" {
         search_path: *const c_char,
         argv: *const *mut c_char,
     ) -> c_int;
+
+    pub fn qsort_r(
+        base: *mut c_void,
+        num: size_t,
+        size: size_t,
+        arg: *mut c_void,
+        compar: Option<unsafe extern "C" fn(*mut c_void, *const c_void, *const c_void) -> c_int>,
+    );
 }
 
 cfg_if! {

src/unix/bsd/freebsdlike/mod.rs

@@ -1867,6 +1867,14 @@ extern "C" {
         fd: c_int,
         newfd: c_int,
     ) -> c_int;
+
+    pub fn qsort_r(
+        base: *mut c_void,
+        num: size_t,
+        size: size_t,
+        compar: Option<unsafe extern "C" fn(*const c_void, *const c_void, *mut c_void) -> c_int>,
+        arg: *mut c_void,
+    );
 }
 
 #[link(name = "rt")]

src/unix/bsd/netbsdlike/netbsd/mod.rs

@@ -2755,6 +2755,14 @@ extern "C" {
         new_value: *const itimerspec,
         old_value: *mut itimerspec,
     ) -> c_int;
+
+    pub fn qsort_r(
+        base: *mut c_void,
+        num: size_t,
+        size: size_t,
+        compar: Option<unsafe extern "C" fn(*const c_void, *const c_void, *mut c_void) -> c_int>,
+        arg: *mut c_void,
+    );
 }
 
 #[link(name = "rt")]

src/windows/mod.rs

@@ -289,6 +289,19 @@ extern "C" {
     pub fn isblank(c: c_int) -> c_int;
     pub fn tolower(c: c_int) -> c_int;
     pub fn toupper(c: c_int) -> c_int;
+    pub fn qsort(
+        base: *mut c_void,
+        num: size_t,
+        size: size_t,
+        compar: Option<unsafe extern "C" fn(*const c_void, *const c_void) -> c_int>,
+    );
+    pub fn qsort_s(
+        base: *mut c_void,
+        num: size_t,
+        size: size_t,
+        compar: Option<unsafe extern "C" fn(*mut c_void, *const c_void, *const c_void) -> c_int>,
+        arg: *mut c_void,
+    );
     pub fn fopen(filename: *const c_char, mode: *const c_char) -> *mut FILE;
     pub fn freopen(filename: *const c_char, mode: *const c_char, file: *mut FILE) -> *mut FILE;
     pub fn fflush(file: *mut FILE) -> c_int;