Qsort - Analog Devices VISUALDSP++ 3.5 Manual

qsort

quicksort
Synopsis
#include <stdlib.h>
void qsort(void *base, size_t nelem, size_t size,
int (*compare) (const void *, const void *));
Description
The function sorts an array of
qsort
The size of each object is specified by
The contents of the array are sorted into ascending order according to a
comparison function pointed to by
arguments that point to the objects being compared. The function shall
return an integer less than, equal to, or greater than zero if the first argu-
ment is considered to be respectively less than, equal to, or greater than
the second.
If two elements compare as equal, their order in the sorted array is unspec-
ified. The
qsort
pre-sorted array. Note that:
• points to the start of the array
base
• is the number of elements in the array
nelem
• is the size of each element of the array
size
•
compare
pare two elements of the array. The function should return a value
less than, equal to, or greater than zero, according to whether the
first argument is less than, equal to, or greater than the second.
VisualDSP++ 3.5 C/C++ Compiler and Library Manual
for ADSP-219x DSPs
function executes a binary search operation on a
is a pointer to a function that is called by
C/C++ Run-Time Library
objects, pointed to by
nelem
.
size
, which is called with two
compare
.
base
to com-
qsort
3-105