Gerard Marull Paretas wrote:
Hello.
Hi,
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.
I think you just answered your own question: if all the variables
involved are uint16_t, then that is the precision used for all he
expression and it will overflow on the multiplication.
--
Paulo Marques
Software Development Department - Grupo PIE, S.A.
Phone: +351 252 290600, Fax: +351 252 290601
Web: www.grupopie.com
"A tautology is a thing which is tautological."
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