div(3C) div(3C)
NAME
div, ldiv - compute the quotient and remainder
SYNOPSIS
#include <stdlib.h>
divt div(int numer, int denom);
ldivt ldiv(long int numer, long int denom);
DESCRIPTION
div() computes the quotient and remainder of the division of the
numerator numer by the denominator denom. This function provides a
well defined semantics for the signed integral division and remainder
operations, unlike the implementation-defined semantics of the built-
in operations. The sign of the resulting quotient is that of the alge-
braic quotient, and, if the division is inexact, the magnitude of the
resulting quotient is the largest integer less than the magnitude of
the algebraic quotient. If the result cannot be represented, the
behavior is undefined; otherwise, quotient * denom + remainder will
equal numer.
div() returns a structure of type divt, comprising both the quotient
and remainder:
typedef struct divt {
int quot; /*quotient*/
int rem; /*remainder*/
} divt;
ldiv() is similar to div(), except that the arguments and the members
of the returned structure (which has type ldivt) all have type long
int.
Page 1 Reliant UNIX 5.44 Printed 11/98