FIX16Sub
![FIX16Sub 1:](Images/gif/36073483__en-US__Web.gif)
This function subtracts two signed 16-bit fixed-point numbers. The numbers do not have to have the same resolution (number of decimal places). The resolution of the number with the higher number of decimal places is reduced before the subtraction, i.e. the decimal places of the number with the higher resolution are truncated. The result of the subtraction is a signed 16-bit fixed-point number.
FUNCTION FIX16Sub: T_FIX16
VAR_INPUT
VAR_INPUT
minuend : T_FIX16;
subtrahend : T_FIX16;
END_VAR
minuend: Number from which a value is subtracted (type: T_FIX16).
subtrahend: Number that is subtracted (type: T_FIX16).
Example:
PROGRAM FIXSUB
VAR
a, b : T_FIX16;
result : LREAL;
END_VAR
a := LREAL_TO_FIX16( 0.5, 8 );
b := LREAL_TO_FIX16( 0.75, 8 );
result := FIX16_TO_LREAL( FIX16Sub( a, b ) ); (* The result is: -0.25 *)
Requirements
Development environment |
Target platform |
PLC libraries to be integrated (category group) |
---|---|---|
TwinCAT v3.1.0 |
PC or CX (x86, x64, ARM) |
Tc2_Utilities (System) |