remainderl man page on Kali

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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.

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       remainder():
	   _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
	       || _XOPEN_SOURCE >= 500
	       || /* Since glibc 2.19: */ _DEFAULT_SOURCE
	       || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
       remainderf(), remainderl():
	   _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
	       || /* Since glibc 2.19: */ _DEFAULT_SOURCE
	       || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
       drem(), dremf(), dreml():
	   /* Since glibc 2.19: */ _DEFAULT_SOURCE
	       || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

DESCRIPTION
       These functions compute 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 the absolute value of x-n*y is 0.5,	 n  is	chosen	to  be
       even.

       These  functions	 are  unaffected  by  the  current  rounding mode (see
       fenv(3)).

       The drem() function does precisely the same thing.

RETURN VALUE
       On success, these functions return the floating-point remainder, x-n*y.
       If the return value is 0, it has the sign of x.

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

       If  x  is an infinity, and y is not a NaN, a domain error occurs, and a
       NaN is returned.

       If y is zero, and x is not a NaN, a domain error occurs, and a  NaN  is
       returned.

ERRORS
       See  math_error(7) for information on how to determine whether an error
       has occurred when calling these functions.

       The following errors can occur:

       Domain error: x is an infinity and y is not a NaN
	      errno is set to EDOM (but see BUGS).  An invalid	floating-point
	      exception (FE_INVALID) is raised.

	      These functions do not set errno for this case.

       Domain error: y is zero
	      errno  is	 set  to  EDOM.	  An  invalid floating-point exception
	      (FE_INVALID) is raised.

ATTRIBUTES
       For  an	explanation  of	 the  terms  used   in	 this	section,   see
       attributes(7).

       ┌───────────────────────────┬───────────────┬─────────┐
       │Interface		   │ Attribute	   │ Value   │
       ├───────────────────────────┼───────────────┼─────────┤
       │drem(), dremf(), dreml(),  │ Thread safety │ MT-Safe │
       │remainder(), remainderf(), │		   │	     │
       │remainderl()		   │		   │	     │
       └───────────────────────────┴───────────────┴─────────┘
CONFORMING TO
       The functions remainder(), remainderf(), and remainderl() are specified
       in C99, POSIX.1-2001, and POSIX.1-2008.

       The function drem() is from 4.3BSD.  The float and long double variants
       dremf()	and  dreml()  exist on some systems, such as Tru64 and glibc2.
       Avoid the use of these functions in favor of remainder() etc.

BUGS
       Before glibc 2.15, the call

	   remainder(nan(""), 0);

       returned a NaN, as expected, but wrongly caused a domain error.	 Since
       glibc 2.15, a silent NaN (i.e., no domain error) is returned.

       Before  glibc 2.15, errno was not set to EDOM for the domain error that
       occurs when x is an infinity and y is not a NaN.	 errno was not set

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

SEE ALSO
       div(3), fmod(3), remquo(3)

COLOPHON
       This page is part of release 4.14 of the Linux  man-pages  project.   A
       description  of	the project, information about reporting bugs, and the
       latest	 version    of	  this	  page,	   can	   be	  found	    at
       https://www.kernel.org/doc/man-pages/.

				  2017-09-15			  REMAINDER(3)
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