FC_System_FPU Class Reference

Floating Point Unit
This class adds a floating point unit to the processor.
The gcc compiler will use floting point instructions.
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Inheritance diagram for FC_System_FPU:

Detailed Description

Floating Point Unit
This class adds a floating point unit to the processor.
The gcc compiler will use floting point instructions.
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The following example show how to include the foating point unit:

// This example show how to use FC_System_FPU class to add acceleration of floating
// points operations. A 32 depth array is first filled with integer sin values ranging 
// from -1000 to 1000. A new value from the table is output every 10 us.
 
#include <math.h>
#include "fc_io.h"
#include "fc_system.h"
 
int main(void)
{
//% hw_begin
    FC_IO_Clk Clk(100); 
    FC_IO_Out sin_out(11);
    FC_System_FPU fpu;    
    FC_System_Timer timer;
//% hw_end
 
    // Create a table with sin values * 1000
    const int N = 32;
    int sin_table[N];
    float da = 2 * 3.1415f / N;
    for(int i=0;i<32;i++)
    {
        sin_table[i] = int( 1000.0f * sinf(da*i) );
    }
 
    timer.Start(10,TU_us);
    int i=0;
    for(;;)
    {        
        timer.WaitTimer();
        sin_out = sin_table[i];
        i++;
        if(i>=N)
            i=0;        
    }  
}