qsort - quicker sort #include <u.h>

#include <libc.h>

void qsort(void *base, long nel, long width,
  int (*compar)(void*, void*))

Qsort (quicker sort) sorts an array into nondecreasing order. The first argument is a pointer to the base of the data; the second is the number of elements; the third is the width of an element in bytes; the last is the name of a comparison routine to be called with pointers to elements being compared. The routine must return an integer less than, equal to, or greater than 0 according as the first argument is to be considered less than, equal to, or greater than the second. /sys/src/libc/port/qsort.c sort (1)