doubleToStr (Function)

This function converts a DOUBLE to a string.

Note: This function works with DOUBLE, but can also work with FLOAT as described in the Floating-point math introductory section.

Please note that when using the Floating-Point Math functions in X32 and NX32 compilation mode then math.inc must be explicitly included by the application.

When using the NX32L compilation mode, math.inc is included by default.

Input:

v : DOUBLE

Value to convert.

Returns: STRING

A string representation the value of v with 16 significant digits.

Declaration:

FUNCTION doubleToStr : STRING;
VAR_INPUT
   v : DOUBLE;
END_VAR;

Example:

INCLUDE rtcu.inc
INCLUDE math.inc
 
PROGRAM test;
 
DebugMsg(message := " sin(270) = " + doubleToStr(v := sin(v := degToRad(v := 270.0))));
DebugMsg(message := " asin(1) = " + doubleToStr(v := radToDeg(v := asin(v := 1.0))));
 
END_PROGRAM;