some new features

.venv/lib/python3.12/site-packages/Cython/Includes/posix/stdlib.pxd

@@ -0,0 +1,29 @@
+# POSIX additions to <stdlib.h>
+# https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stdlib.h.html
+
+cdef extern from "<stdlib.h>" nogil:
+    void   _Exit(int)
+    double drand48()
+    double erand48(unsigned short *)
+    int    getsubopt(char **, char *const *, char **)
+    void   lcong48(unsigned short *)
+    long   lrand()
+    char  *mkdtemp(char *)
+    int    mkstemp(char *)
+    long   mrand()
+    long   nrand48(unsigned short *)
+    int    posix_memalign(void **, size_t, size_t)
+    int    posix_openpt(int)
+    char  *ptsname(int)
+    int    putenv(char *)
+    int    rand_r(unsigned *)
+    long   random()
+    char  *realpath(const char *, char *)
+    unsigned short *seed48(unsigned short *)
+    int    setenv(const char *, const char *, int)
+    void   setkey(const char *)
+    char  *setstate(char *)
+    void   srand48(long)
+    void   srandom(unsigned)
+    int    unlockpt(int)
+    int    unsetenv(const char *)