`abs.3p` ( 3 )

вернуть целочисленное абсолютное значение (return an integer absolute value)

Пролог (Prolog)

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

Имя (Name)

abs — return an integer absolute value

Синопсис (Synopsis)

#include <stdlib.h>

int abs(int i);

Описание (Description)

The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1‐2017 defers to the ISO C standard.

The abs() function shall compute the absolute value of its integer operand, i. If the result cannot be represented, the behavior is undefined.

Возвращаемое значение (Return value)

The abs() function shall return the absolute value of its integer operand.

Ошибки (Error)

No errors are defined.

The following sections are informative.

Примеры (Examples)

None.

Использование в приложениях (Application usage)

In two's-complement representation, the absolute value of the negative integer with largest magnitude {INT_MIN} might not be representable.

Обоснование (Rationale)

None.

Будущие направления (Future directions)