LTRUNC

LTRUNC 1:

The LTRUNC function determines the integral component of a floating point number.

Examples

LTRUNC(2.8) = 2

LTRUNC(-2.8) = -2

Similar functions: TRUNC, FLOOR

Note: Unlike TRUNC, the result from LTRUNC is of type LREAL and is therefore not limited to the value range of integer variables.

FUNCTION LTRUNC : LREAL

VAR_INPUT
    lr_in  : LREAL;
END_VAR

lr_in : Function parameters of type LREAL

Development environment	Target system type	PLC libraries to be linked
TwinCAT v2.9.0 build 1000 onwards	PC or CX (x86)	TcMath.Lib
TwinCAT v2.10.0 Build >= 1301	CX (ARM)	TcMath.Lib