floor, ceil, fmod, fabs

Purpose

     Computes floor, ceiling,  remainder, absolute value func-
     tions.

Library

     Math Library (libm.a)

Syntax

     #include <math.h>

     double floor (x)                          double fmod (x, y)
     double x;                                 double x, y;

     double ceil (x)                           double fabs (x)
     double x;                                 double x;
     Description

     The floor  subroutine returns  the largest integer  (as a
     double) not greater than the x parameter.

     The ceil subroutine returns the smallest integer not less
     than the x parameter.

     The fmod subroutine returns the remainder of x / y.  More
     precisely, this value is x if the y parameter is 0.  Oth-
     erwise, it is  the number f with the same  sign as x such
     that x = iy + f for some integer i, and |f| < |y|.

     The fabs subroutine returns the absolute value of x, |x|.

     Related Information

     In this book:  "abs."