You are reading a single comment by @Robin and its replies. Click here to read the full conversation.
  • Sun 2018.08.26

    I am attempting to write some simple inline C functions. Was able to get the first snippet 'How do I use it' to compile and run.

    http://www.espruino.com/InlineC

    I'm now attempting the 'C' pow() function but wonder where to place the #include statement
    #include
    Wouldn't you know it, this post machine wont allow the lt math.h gl symbology

    #include <math.h>



    Not under: either
    http://www.espruino.com/Compilation

    It can't be placed outside the var c = E.compiledC( block as it's not recognized as Javascript, and placing it inside results in this compiler msg:

    COMPILER MESSAGE
    ----------------------------------------­-----------
    out4261837251.cpp:60:1: error: stray '#' in program
     [#include](http://forum.espruino.com/sea­rch/?q=%23include) <math.h>
     ^
    out4261837251.cpp:60:2: error: 'include' does not name a type
     [#include](http://forum.espruino.com/sea­rch/?q=%23include) <math.h>
    
                                     COMPILER MESSAGE
    ----------------------------------------­-----------
    out1319183279.cpp: In function 'int calc(int)':
    out1319183279.cpp:71:26: error: 'pow' was not declared in this scope
      float dP = pow(dR,dG);
    
    


    var cg = E.compiledC(`
    // int calc(int)
    
    [#include](http://forum.espruino.com/sea­rch/?q=%23include)  <math.h>
    
    int calc(int n){
     float dR = float(n) / 255.0;
     float dP = pow(dR,dG);
    


    var cg = E.compiledC(`
    // int calc(int)
    #include <math.h>
    int calc(int n){
    float dR = float(n) / 255.0;
    float dP = pow(dR,dG);

    Need the insight of someone that's been down this path.
    A pow er user ;-)

    Thankx

About

Avatar for Robin @Robin started