Defined in 2 files as a prototype:

• include/unistd.h, line 651 (as a prototype)
• include/unistd.h, line 654 (as a prototype)

Defined in 2 files as a function:

• gen/FreeBSD/usleep.c, line 46 (as a function)
• gen/usleep-fbsd.c, line 51 (as a function)

Referenced in 2 files:

• gen/utmpx-darwin.c, line 1010
• stdlib/abort-fbsd.c
  • line 77
  • line 100