NAME

xt_long_long_cmp() - Compare two long longs for qsort(3), bsearch(3), etc.

LIBRARY

#include <xtend/math.h>
-lxtend

SYNOPSIS

int     xt_long_long_cmp(const long long *n1, const long long *n2)

ARGUMENTS

n1, n2  Pointers to two long long values

DESCRIPTION

This is a function that compares two long longs as a service to polymorphic functions such as qsort(3), bsearch(3), etc. The address of xt_long_long_cmp() is passed as an argument to perform the data type specific comparison on behalf of the sort of search function.

RETURN VALUES

A value > 0 if *n1 is greater than *n2 A value < 0 if *n1 is less than *n2 0 if the values are equal

EXAMPLES

long long  list[LIST_SIZE];
// sizeof(*list) will continue to work if we change the data type
// We'll still need to change the cmp function, though
qsort(list, LIST_SIZE, sizeof(*list),


      (int (*)(const void *, const void *))xt_long_long_cmp);