qsort - Sorts a table in place
Standard C Library (libc.so, libc.a)
int (*compar) (const void *, const void *));
Interfaces documented on this reference page conform to industry standards as follows:
qsort(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
Points to the first entry in the table. Specifies the number of entries in the table. Specifies the size in bytes of each table entry. Points to the user-specified function to be used to compare pairs of table elements. The comparison function will be called with two parameters that point to the two elements to be compared. The comparison function must return an integer less than, equal to, or greater than zero, depending on whether the first element in the comparison is considered less than, equal to, or greater than the second element.
The qsort() function sorts a table having a specified number of entries. The contents of the table are sorted in ascending order according to a user-specified comparison function (the strcmp() function, for example).
The comparison function need not compare every byte, so arbitrary data may be contained in the elements in addition to the values being compared.
When two members compare equal, their order in the sorted array is indeterminate.
Functions: bsearch(3), lsearch(3)
Standards: standards(5) delim off