bionic (3) remquo.3.gz

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():
           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L

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 quotient 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

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

       ┌───────────────────────────────┬───────────────┬─────────┐
       │Interface                      │ Attribute     │ Value   │
       ├───────────────────────────────┼───────────────┼─────────┤
       │remquo(), remquof(), remquol() │ Thread safety │ MT-Safe │
       └───────────────────────────────┴───────────────┴─────────┘

CONFORMING TO

       C99, POSIX.1-2001, POSIX.1-2008.

SEE ALSO

       fmod(3), logb(3), remainder(3)

COLOPHON

       This  page  is  part  of  release  4.15  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/.