cmpfn.h

This interface exports several comparison functions for use with the other library packages.

Type
CompareFn	This type defines the type space of comparison functions, each of which take the addresses of their arguments and return an integer from the set {-1, 0, +1} depending on whether the first argument is less than, equal to, or greater than the second.
Functions
intCmpFn	Compares two values of type `int` whose addresses are supplied by the pointer arguments `p1` and `p2`.
shortCmpFn	Compares two values of type `short` whose addresses are supplied by the pointer arguments `p1` and `p2`.
longCmpFn	Compares two values of type `long` whose addresses are supplied by the pointer arguments `p1` and `p2`.
charCmpFn	Compares two values of type `char` whose addresses are supplied by the pointer arguments `p1` and `p2`.
floatCmpFn	Compares two values of type `float` whose addresses are supplied by the pointer arguments `p1` and `p2`.
doubleCmpFn	Compares two values of type `double` whose addresses are supplied by the pointer arguments `p1` and `p2`.
unsignedCmpFn	Compares two values of type `unsigned` whose addresses are supplied by the pointer arguments `p1` and `p2`.
unsignedShortCmpFn	Compares two values of type `unsignedshort` whose addresses are supplied by the pointer arguments `p1` and `p2`.
unsignedLongCmpFn	Compares two values of type `unsignedlong` whose addresses are supplied by the pointer arguments `p1` and `p2`.
unsignedCharCmpFn	Compares two values of type `unsignedchar` whose addresses are supplied by the pointer arguments `p1` and `p2`.
stringCmpFn	Compares two values of type `string` whose addresses are supplied by the pointer arguments `p1` and `p2`.
pointerCmpFn	Compares two values of type `pointer` whose addresses are supplied by the pointer arguments `p1` and `p2`.

Type detail

typedef int CompareFn(*CompareFn)(const void *p1, const void *p2);

This type defines the type space of comparison functions, each of which take the addresses of their arguments and return an integer from the set {-1, 0, +1} depending on whether the first argument is less than, equal to, or greater than the second.

Function detail

int intCmpFn(const void *p1, const void *p2);

Compares two values of type int whose addresses are supplied by the pointer arguments p1 and p2.

int shortCmpFn(const void *p1, const void *p2);

Compares two values of type short whose addresses are supplied by the pointer arguments p1 and p2.

int longCmpFn(const void *p1, const void *p2);

Compares two values of type long whose addresses are supplied by the pointer arguments p1 and p2.

int charCmpFn(const void *p1, const void *p2);

Compares two values of type char whose addresses are supplied by the pointer arguments p1 and p2.

int floatCmpFn(const void *p1, const void *p2);

Compares two values of type float whose addresses are supplied by the pointer arguments p1 and p2.

int doubleCmpFn(const void *p1, const void *p2);

Compares two values of type double whose addresses are supplied by the pointer arguments p1 and p2.

int unsignedCmpFn(const void *p1, const void *p2);

Compares two values of type unsigned whose addresses are supplied by the pointer arguments p1 and p2.

int unsignedShortCmpFn(const void *p1, const void *p2);

Compares two values of type unsignedshort whose addresses are supplied by the pointer arguments p1 and p2.

int unsignedLongCmpFn(const void *p1, const void *p2);

Compares two values of type unsignedlong whose addresses are supplied by the pointer arguments p1 and p2.

int unsignedCharCmpFn(const void *p1, const void *p2);

Compares two values of type unsignedchar whose addresses are supplied by the pointer arguments p1 and p2.

int stringCmpFn(const void *p1, const void *p2);

Compares two values of type string whose addresses are supplied by the pointer arguments p1 and p2.

int pointerCmpFn(const void *p1, const void *p2);

Compares two values of type pointer whose addresses are supplied by the pointer arguments p1 and p2. Pointer comparison is based on the numeric equivalent of the pointer.