pg_ascii_tolower pg_ascii_toupper pg_qsort pg_qsort_strcmp pg_strcasecmp pg_strncasecmp pg_tolower pg_toupper qsort qsort_arg qsort_arg_comparator

qsort #define qsort (   a,   b,   c,   d  )    pg_qsort(a,b,c,d)