remainderl(3p) [centos man page]

REMAINDER(3P)						     POSIX Programmer's Manual						     REMAINDER(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       remainder, remainderf, remainderl - remainder function

SYNOPSIS

       #include <math.h>

       double remainder(double x, double y);
       float remainderf(float x, float y);
       long double remainderl(long double x, long double y);

DESCRIPTION

       These functions shall return the floating-point remainder r= x- ny when y is non-zero. The value n is the integral value nearest the  exact
       value x/ y.  When |n-x/y|=0.5, the value n is chosen to be even.

       The behavior of remainder() shall be independent of the rounding mode.

RETURN VALUE

       Upon successful completion, these functions shall return the floating-point remainder r= x- ny when y is non-zero.

       If x or y is NaN, a NaN shall be returned.

       If  x  is  infinite  or y 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.

ERRORS

       These functions shall fail if:

       Domain Error
	      The x argument is +-Inf, or the y argument is +-0 and the other argument is non-NaN.

       If the integer expression (math_errhandling & MATH_ERRNO) is non-zero, then errno 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.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       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.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       abs(), div(), feclearexcept(), fetestexcept(), ldiv(), the Base Definitions volume of  IEEE Std 1003.1-2001,  Section  4.18,  Treatment	of
       Error Conditions for Mathematical Functions, <math.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- 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 .

IEEE
/The Open Group						       2003							     REMAINDER(3P)

REMAINDER(3P)						     POSIX Programmer's Manual						     REMAINDER(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       remainder, remainderf, remainderl - remainder function

SYNOPSIS

       #include <math.h>

       double remainder(double x, double y);
       float remainderf(float x, float y);
       long double remainderl(long double x, long double y);

DESCRIPTION

       These functions shall return the floating-point remainder r= x- ny when y is non-zero. The value n is the integral value nearest the  exact
       value x/ y.  When |n-x/y|=0.5, the value n is chosen to be even.

       The behavior of remainder() shall be independent of the rounding mode.

RETURN VALUE

       Upon successful completion, these functions shall return the floating-point remainder r= x- ny when y is non-zero.

       If x or y is NaN, a NaN shall be returned.

       If  x  is  infinite  or y 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.

ERRORS

       These functions shall fail if:

       Domain Error
	      The x argument is +-Inf, or the y argument is +-0 and the other argument is non-NaN.

       If the integer expression (math_errhandling & MATH_ERRNO) is non-zero, then errno 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.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       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.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       abs(), div(), feclearexcept(), fetestexcept(), ldiv(), the Base Definitions volume of  IEEE Std 1003.1-2001,  Section  4.18,  Treatment	of
       Error Conditions for Mathematical Functions, <math.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- 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 .

IEEE
/The Open Group						       2003							     REMAINDER(3P)