[avr-gcc-list] Operation problem

[Gerard Marull Paretas]

Hello.

When I try to execute this line:

currentsong.length=(currentsong.frames * currentsong.samples_per_frame) / currentsong.samples_per_sec;

currentsong.length gets no result. However, doing these operations step by step produce the expected results:

currentsong.length=currentsong.frames;
currentsong.length*=currentsong.samples_per_frame;
currentsong.length/=currentsong.samples_per_sec;

The second method requires currentsong.length to be a long int (uint32_t), because the multiplication of 
currentsong.frames by currentsong.samples_per_frame does not fit on an uint16_t. But with the first way, an uint16_t would be enough, since never will reach values over uint16_t limit. All other used variables are uint16_t.

I don't know what could be the problem. Maybe I'm missing something ?

Thanks, Gerard.