McLaurin_F32 - Smartrek
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McLaurin_F32

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Estimated reading time: 1 min
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Prototype

McLaurin_F32(r, rStart, rEnd)

Description

McLaurin series calc: rStart and rEnd (inclusive) defines the start float and the end floats, say you have three r0, r1, r2, then calculation is: r = r0rr + r1*r + r2.

r is the buffer position used for the indeterminate value and for the result.

Return
Nothing

Code Example

The following code example uses the McLaurin_F32 function.

The SMK900.evi file used for this example can be downloaded at the bottom of this page.
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/* Example Code
* LinInterpol_F32
*
* get buffer indexes rS, rE and r
* set buffer in memory
* mclaurin value at r
* return 0x00 (lookup pas ok) or 0x01 (lookup ok)
*
*/
 
#include "SMK900.evi"
 
#define SENSORCODE 0x01
 
function exec_aircmd(){
    local rxLen;
    local useParams;
    local rS,rE,r;
    local i;
    local result;
 
    rxLen=GetAirBuf(0, 0, 20);
     
     
    /*if(rxLen>=15){ // 1 byte for paketID + 14 bytes of payload (6 bytes for indexes and minimum 8 bytes for buffer)
        useParams=true;
        rS=GetBuffer_16(1);
        rE=GetBuffer_16(3);
        r=GetBuffer_16(5);
        for(i=7;i<rxLen;i++){
            SetBuffer(i-7,GetBuffer_S8(i),1);
        }
    }else{*/
        useParams=false;
        rS=4;
        rE=8;
        r=0;
         
        SetBuffer_16(0,0x0000); // 1
        SetBuffer_16(2,0x3F80);
        SetBuffer_16(4,0x0000); // -1
        SetBuffer_16(6,0xBF80);
        SetBuffer_16(8,0x0000); // -2
        SetBuffer_16(10,0xC000);
    /*}*/
     
    McLaurin_F32(r,rS,rE);
 
    /*if(useParams){
        SetBuffer_16(0,GetBuffer_16(r));
        SetBuffer_16(2,GetBuffer_16(r+2));
        Send(4);
    }else{*/
        if(GetBuffer_16(2)==0xC040&&GetBuffer_16(0)==0x0000){ // -3
            result = 1;
        }else{
            result = 0;
        }
        SetBuffer(0,result,1);
        Send(1);
    /*}*/
}
 
function main()
{
    local execType;
     
    execType = GetExecType();
    if(execType==MESHEXECTYPE_AIRCMD_bm){
        exec_aircmd();
    }
}
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