fmod crashes teensy 4.1, fmodf does not

[nmz787]

when compiling and flashing this library as-is, my teensy 4.1 would crash, at least I would fail to get any serial logs out of the device... after debugging, I found the fmod function is for doubles, but fmodf is for floats. Thus these changes are suggested:

 void AD9833 :: SetPhase ( Registers phaseReg, float phaseInDeg ) {
        // Sanity checks on input
-       phaseInDeg = fmod(phaseInDeg,360);
-       if ( phaseInDeg < 0 ) phaseInDeg += 360;
+       // fmod crashes the teensy, fmodf does not
+       phaseInDeg = fmodf(phaseInDeg, 360.);
+       if ( phaseInDeg < 0 ) phaseInDeg += 360.;