How to use PIC32MZ EF FPU?

[den1892]

Hello! I am a newbie in PIC32 theme and I have a question about Floating Point Unit in PIC32 EF family. How can I use this module? For example, I need to devide 3,792 by 1.673. Give me an example code pls. Best regards!

[stefan.filipovic]

Hi,

Here's a simple example:

Code: Select all

float x = 3.792;
float y = 1.673;

float res = 0;
void main() {
    res = x/y;
    
    while(1);
}

In generated listing file you will notice FPU instructions:

Code: Select all

LWC1        S1, Offset(_y+0)(GP)  
LWC1        S0, Offset(_x+0)(GP)  
DIV.S         S0, S0, S1          
SWC1        S0, Offset(_res+0)(GP)

Kind regards,

[den1892]

Hello dear friend! Thank you for you help! Everything is perfectly clear!