# remquo(3) — Linux manual page

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

## NAME         top

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

## SYNOPSIS         top

```       #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);

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

remquo(), remquof(), remquol():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
```

## DESCRIPTION         top

```       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         top

```       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         top

```       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         top

```       These functions first appeared in glibc in version 2.1.
```

## ATTRIBUTES         top

```       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         top

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

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

## COLOPHON         top

```       This page is part of release 5.13 of the Linux man-pages project.
A description of the project, information about reporting bugs,