REMQUO(3)                           Linux Programmer's Manual                           REMQUO(3)



NAME
       remquo, remquof, remquol - remainder and part of quotient

SYNOPSIS
       #include <math.h>

       double remquo(double x, double y, int *quo);
       float remquof(float x, float y, int *quo);
       long double remquol(long double x, long double y, int *quo);

       Link with -lm.

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

       remquo(), remquof(), remquol():
           _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;
           or cc -std=c99

DESCRIPTION
       These functions compute the remainder and part of the quotient upon division of x by y.  A
       few bits of the quotient are stored via the quo pointer.  The remainder is returned as the
       function result.

       The value of the remainder is the same as that computed by the remainder(3) function.

       The value stored via the quo pointer has the sign of x / y and agrees with the quotient in
       at least the low order 3 bits.

       For example, remquo(29.0, 3.0) returns -1.0 and might store 2.  Note that the actual  quo‐
       tient might not fit in an integer.

RETURN VALUE
       On  success, these functions return the same value as the analogous functions described in
       remainder(3).

       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 or y is 0, and the other argument is not a NaN
              An invalid floating-point exception (FE_INVALID) is raised.

       These functions do not set errno.

VERSIONS
       These functions first appeared in glibc in version 2.1.

ATTRIBUTES
   Multithreading (see pthreads(7))
       The remquo(), remquof(), and remquol() functions are thread-safe.

CONFORMING TO
       C99, POSIX.1-2001.

SEE ALSO
       fmod(3), logb(3), remainder(3)

COLOPHON
       This  page  is  part of release 3.74 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 http://www.kernel.org/doc/man-pages/.



GNU                                         2014-05-10                                  REMQUO(3)