std::abs(int), std::labs, std::llabs

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
Numerics library
Common mathematical functions
Functions Basic operations abs(int) labs llabs imaxabs (C++11) abs(float) fabs div ldiv lldiv imaxdiv (C++11) fmod remainder (C++11) remquo (C++11) fma (C++11) fmax (C++11) fmin (C++11) fdim (C++11) nan nanf nanl (C++11) (C++11) (C++11) Exponential functions exp exp2 (C++11) expm1 (C++11) log log10 log1p (C++11) log2 (C++11) Power functions sqrt cbrt (C++11) hypot (C++11) pow Trigonometric and hyperbolic functions sin cos tan asin acos atan atan2 sinh cosh tanh asinh (C++11) acosh (C++11) atanh (C++11) Error and gamma functions erf (C++11) erfc (C++11) lgamma (C++11) tgamma (C++11) Nearest integer floating point operations ceil floor round lround llround (C++11) (C++11) (C++11) trunc (C++11) nearbyint (C++11) rint lrint llrint (C++11) (C++11) (C++11) Floating point manipulation functions ldexp scalbn scalbln (C++11) (C++11) ilogb (C++11) logb (C++11) frexp modf nextafter nexttoward (C++11) (C++11) copysign (C++11) Classification fpclassify (C++11) isfinite (C++11) isinf (C++11) isnan (C++11) isnormal (C++11) signbit (C++11) Macro constants HUGE_VALF HUGE_VAL HUGE_VALL (C++11) (C++11) FP_NORMAL FP_SUBNORMAL FP_ZERO FP_INFINITE FP_NAN (C++11) (C++11) (C++11) (C++11) (C++11)

Defined in header <cstdlib>
int       abs( int n );
long      abs( long n );
long long abs( long long n );		(since C++11)
long       labs( long n );
long long llabs( long long n );		(since C++11)
Defined in header <cinttypes>
std::intmax_t abs( std::intmax_t n );		(since C++11)
std::intmax_t imaxabs( std::intmax_t n );		(since C++11)

Computes the absolute value of an integer number.

[edit] Parameters

n

-

integer value

[edit] Return value

the absolute value of n (i.e. |n|)

[edit] See also

abs(float) fabs	absolute value of a floating point value (|x|) (function)
abs(std::complex)	returns the magnitude of a complex number (function template)
abs(std::valarray)	applies the function std::abs to each element of valarray (function template)