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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "REMAINDER" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" remainder 
+.SH NAME
+remainder, remainderf, remainderl \- remainder function
+.SH SYNOPSIS
+.LP
+\fB#include <math.h>
+.br
+.sp
+double remainder(double\fP \fIx\fP\fB, double\fP \fIy\fP\fB);
+.br
+float remainderf(float\fP \fIx\fP\fB, float\fP \fIy\fP\fB);
+.br
+long double remainderl(long double\fP \fIx\fP\fB, long double\fP \fIy\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+These functions shall return the floating-point remainder \fIr\fP=
+\fIx\fP- \fIny\fP when \fIy\fP is non-zero. The value
+\fIn\fP is the integral value nearest the exact value \fIx\fP/ \fIy\fP.
+When |\fIn\fP-\fIx\fP/\fIy\fP|=0.5, the value
+\fIn\fP is chosen to be even.
+.LP
+The behavior of \fIremainder\fP() shall be independent of the rounding
+mode.
+.SH RETURN VALUE
+.LP
+Upon successful completion, these functions shall return the floating-point
+remainder \fIr\fP= \fIx\fP- \fIny\fP when
+\fIy\fP is non-zero.
+.LP
+If
+\fIx\fP or \fIy\fP is NaN, a NaN shall be returned.
+.LP
+If \fIx\fP is infinite or \fIy\fP is 0 and the other is non-NaN, a
+domain error shall occur, and either a NaN (if supported),
+or an implementation-defined value shall be returned. 
+.SH ERRORS
+.LP
+These functions shall fail if:
+.TP 7
+Domain\ Error
+The \fIx\fP argument is \(+-Inf, or the \fIy\fP argument is \(+-0
+and the other argument is non-NaN. 
+.LP
+If the integer expression (math_errhandling & MATH_ERRNO) is non-zero,
+then \fIerrno\fP shall be set to [EDOM]. If the
+integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero,
+then the invalid floating-point exception shall be raised.
+.sp
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+On error, the expressions (math_errhandling & MATH_ERRNO) and (math_errhandling
+& MATH_ERREXCEPT) are independent of
+each other, but at least one of them must be non-zero.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIabs\fP() , \fIdiv\fP() , \fIfeclearexcept\fP() , \fIfetestexcept\fP()
+, \fIldiv\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
+Section 4.18, Treatment of Error Conditions for Mathematical Functions,
+\fI<math.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .