FreeBSD Manual Pages
xt_double_cmp(3) Library Functions Manual xt_double_cmp(3) NAME xt_double_cmp() - Compare two doubles for sort(3), bsearch(3), etc. LIBRARY #include <xtend/math.h> -lxtend SYNOPSIS int xt_double_cmp(const double *n1, const double *n2) ARGUMENTS n1, n2 Pointers to two double values DESCRIPTION This is a function that compares two doubles as a service to polymor- phic functions such as qsort(3), bsearch(3), etc. The address of xt_double_cmp() is passed as an argument to perform the data type spe- cific 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 double 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_double_cmp); SEE ALSO qsort(3), heapsort(3), mergesort(3), bsearch(3) xt_double_cmp(3)
NAME | LIBRARY | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=xt_double_cmp&sektion=3&manpath=FreeBSD+Ports+14.3.quarterly>