remainderl

REMAINDER(3)		  Linux Programmer’s Manual		 REMAINDER(3)



NAME
       drem, dremf, dreml, remainder, remainderf, remainderl - floating-point
       remainder function

SYNOPSIS
       #include <math.h>

       /* The C99 versions */
       double remainder(double x, double y);
       float remainderf(float x, float y);
       long double remainderl(long double x, long double y);

       /* Obsolete synonyms */
       double drem(double x, double y);
       float dremf(float x, float y);
       long double dreml(long double x, long double y);

       Link with -lm.

DESCRIPTION
       The remainder() function computes the remainder of dividing  x  by  y.
       The  return value is x - n * y, where n is the value x / y, rounded to
       the nearest integer.  If this quotient is 1/2, it is  rounded  to  the
       nearest	even  number  (independent of the current rounding mode).  If
       the return value is 0, it has the sign of x.

       The drem() function does precisely the same thing.

RETURN VALUE
       The remainder() function returns the remainder, unless y is zero, when
       the function fails and errno is set.

ERRORS
       EDOM   The denominator y is zero.

CONFORMING TO
       IEC  60559.  The three remainder*() functions are from C99.  The func-
       tion drem() is from BSD	4.3.  The  float  and  long  double  variants
       dremf() and dreml() exist on some systems, such as Tru64 and glibc2.

EXAMPLE
       The call "remainder(29.0, 3.0)" returns -1.

SEE ALSO
       fmod(3)



				  2003-11-18			 REMAINDER(3)