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# std::trunc

From cppreference.com
< cpp‎ | numeric‎ | math

Defined in header `<cmath>` |  |
float trunc( float arg ); |  | (since C++11)
double trunc( double arg ); |  | (since C++11)
long double trunc( long double arg ); |  | (since C++11)
double trunc( Integral arg ); |  | (since C++11)

Computes nearest integer not greater in magnitude than `arg`.

### [edit] Parameters

arg | - | floating point value

### [edit] Return value

Nearest integer not greater in magnitude than `arg`.

Return value
Argument

### [edit] Notes

The integer value can be always represented by the given floating point type.

### [edit] See also

floor | nearest integer not greater than the given value (function) [edit]
ceil | nearest integer not less than the given value (function) [edit]
round lround llround (C++11)(C++11)(C++11) | nearest integer, rounding away from zero in halfway cases (function) [edit]

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