libc/rand_r: support rand_r api

refs to https://pubs.opengroup.org/onlinepubs/7908799/xsh/rand.html Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
2026-05-23 14:58:13 +08:00 · 2023-06-28 12:29:03 +08:00
parent 97a2528de9
commit 5d09b4cbd0
2 changed files with 73 additions and 42 deletions
@@ -132,6 +132,7 @@ extern "C"

 void      srand(unsigned int seed);
 int       rand(void);
+int       rand_r(FAR unsigned int *seedp);
 void      lcong48(FAR unsigned short int param[7]);
 FAR unsigned short int *seed48(FAR unsigned short int seed16v[3]);
 void      srand48(long int seedval);