HP 3000 Manuals

HP C/iX Library Reference Manual

fmod 

Returns the floating-point remainder of x divided by y.

Syntax 

     #include <math.h>
     double fmod (double x, double y);

Parameters 

x                     The numerator.

y                     The divisor.

Return Values 

f                     The remainder of x/y.

NaN                   Neither x or y is a number, x is +INFINITY, or y is
                      zero.  In addition, errno is set to EDOM.

x                     An underflow condition has occurred; y may be
                      +-infinity.

0                     An overflow condition has occurred.

Description 

The fmod function returns the floating-point remainder of the division of
x by y.  Zero is returned if y is zero or if x/y overflows.  Otherwise
the number f with the same sign as x is returned, such that x =iy + f for
some integer i and |f| < |y|.

See Also 

floor(), ceil(), fabs(), ANSI C 4.5.6.4, POSIX.1 8.1

MPE/iX 5.0 Documentation