Hi Andi! Maybe you haven't link the mathematical library! In order to access the mathematical functions that are declared in <math.h>, the linker needs to be told to also link the library, libm.a. Typically, system libraries like libm.a are given to the final C compiler command line that performs the linking step by adding a flag -lm at the end.
Regards, Thomas ----- Original Message ----- From: "andi" <[EMAIL PROTECTED]> To: <avr-gcc-list@nongnu.org> Date: Tue, 3 Apr 2007 13:35:28 +0700 Subject: [avr-gcc-list] float type > Hi, > > > I want to use float type in my code, but after i compile it, the avr-gcc > not the generate code for the variable: > > .... > float x = 1.23; > x = x*2; > sei(); > .... > > 320:Freq.c **** float x = 1.23; > 321:Freq.c **** x = x*2; > 322:Freq.c **** > 323:Freq.c **** sei(); > 614 .LM76: > 615 /* #APP */ > 616 0258 7894 sei > 617 /* #NOAPP */ > 618 .L43: > > > Am I miss something ? I use WinAVR-20040720. > > > Andi > > > > _______________________________________________ > AVR-GCC-list mailing list > AVR-GCC-list@nongnu.org > http://lists.nongnu.org/mailman/listinfo/avr-gcc-list > > _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
