what library is usleep in - SERP Analysis

https://man7.org/linux/man-pages/man3/usleep.3.html

https://pubs.opengroup.org/onlinepubs/009696899/functions/usleep.html

https://stackoverflow.com/questions/32434167/definition-of-usleep-in-c

https://linux.die.net/man/3/usleep

https://www.ibm.com/docs/en/zos/2.5.0%3Ftopic%3Dfunctions-usleep-suspend-execution-interval

https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man3/usleep.3.html

https://www.qnx.com/developers/docs/8.0/com.qnx.doc.neutrino.lib_ref/topic/u/usleep.html

https://www.geeksforgeeks.org/cpp/how-to-use-usleep-function-in-cpp-programs/

https://codebrowser.dev/glibc/glibc/sysdeps/posix/usleep.c.html

https://www.intel.com/content/www/us/en/docs/programmable/683282/current/usleep.html