osx man page for drem

REMAINDER(3)						   BSD Library Functions Manual 					      REMAINDER(3)

NAME
     remainder -- floating-point remainder function

SYNOPSIS
     #include <math.h>

     double
     remainder(double x, double y);

     long double
     remainderl(long double x, long double y);

     float
     remainderf(float x, float y);

DESCRIPTION
     The remainder() functions compute the value r such that r = x - n*y, where n is the integer nearest the exact value of x/y.

     If there are two integers closest to x/y, n shall be the even one. If r is zero, it is given the same sign as x.

SPECIAL VALUES
     remainder(x, y) returns a NaN and raises the "invalid" floating-point exception if x is infinite or y is 0.

NOTE
     The drem() function is deprecated.  Please use the C99 function remainder() instead.

VECTOR OPERATIONS
     If you need to apply the remainder() functions to SIMD vectors or arrays, using the following functions provided by the Accelerate.framework
     may give significantly better performance:

     #include <Accelerate/Accelerate.h>

     vFloat vremainderf(vFloat x, vFloat y);
     void vvremainderf(float *z, const float *y, const float *x, const int *n);
     void vvremainder(double *z, const double *y, const double *x, const int *n);

SEE ALSO
     math(3)

STANDARDS
     The remainder() functions conform to ISO/IEC 9899:2011.

BSD
								   July 02, 2008							       BSD