remainder man page on OpenDarwin

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

NAME
remainder — floating-point remainder function

SYNOPSIS
#include <math.h>

double
remainder(double x, double y);

float
remainderf(float x, float y);

DESCRIPTION
The remainder() and remainderf() 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.

math(3)

STANDARDS
The remainder() and remainderf() functions conform to ISO/IEC
9899:1999(E).

BSD				 July 22, 2003				   BSD
```
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