C++

Reference

<cstdlib> (stdlib.h)

function
<cstdlib>

labs

long int labs (long int n);
Absolute value
Returns the absolute value of parameter n ( /n/ ).

This is the long int version of abs.

Parameters

n
Integral value.

Return Value

The absolute value of n.

Example

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/* labs example */ #include <stdio.h> /* printf */ #include <stdlib.h> /* labs */ int main () { long int n,m; n=labs(65537L); m=labs(-100000L); printf ("n=%ld\n",n); printf ("m=%ld\n",m); return 0; }

Output:
 n=65537 m=100000


Data races

Concurrently calling this function is safe, causing no data races.

Exceptions (C++)

No-throw guarantee: this function throws no exceptions.

If the result cannot be represented as a long int (such as labs(LONG_MIN) in an implementation with two's complement signed values), it causes undefined behavior.

See also

abs
Absolute value (function)
fabs
Compute absolute value (function)
ldiv
Integral division (function)