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## [avr-gcc-list] sqrt problems

**From**: |
Jack Valmadre |

**Subject**: |
[avr-gcc-list] sqrt problems |

**Date**: |
Mon, 20 Oct 2003 08:47:43 +1000 |

Hi,
I'm going to write a program that uses the sqrt() function to work out the
hypotenuse of a right angled triangle. I'm testing the function using this
program on a 2313, but all the pins on PORTB go low.
#include <avr/io.h>
#include <math.h>
int main(void) {
DDRB = 0xFF;
PORTB = sqrt(9);
return 0;
}
How can I fix this?
Thanks,
Jack

**[avr-gcc-list] sqrt problems**,
*Jack Valmadre* **<=**