.Fn "int fflush_unlocked" "FILE *stream"
.Fn "int fgetc_unlocked" "FILE *stream"
.Fn "int fputc_unlocked" "int c" "FILE *stream"
.Fn "int fflush_unlocked" "FILE *stream"
.Fn "int fgetc_unlocked" "FILE *stream"
.Fn "int fputc_unlocked" "int c" "FILE *stream"