floor(3m)
NAME
fabs, floor, fmod, ceil − absolute value, floor, ceiling functions
SYNTAX
#include <math.h>
double floor(x)
double x;
double ceil(x)
double x;
double fmod(x, y)
double x, y;
double fabs(x)
double x;
DESCRIPTION
The fabs function returns the absolute value of x, |x|. The floor returns the largest integer not greater than x.
The ceil function returns the smallest integer not less than x.
The fmod function returns the floating-point remainder of the division of x by y: zero if y is zero or if x/y would overflow; otherwise the number f with the same sign as x, such that x = iy + f for some integer i, and |f| < |y|.