Hi Ralf
try
__ieee754_logf
__ieee754_expf
looks like I forgot to add strait calls of these functions...
cheers,
~s
On Thursday 02 June 2005 10:28, Ralf Hildebrandt wrote:
> Hi!
>
> I'm using msp430-gcc in a CVS-checkout version from 01.07.2004 (a little
> bit old, but I'm not the administrator).
>
> If I try to compile the following dummy
> program
> /**************************************************************************
>*******/ #include <stdlib.h>
> #include <msp430x14x.h>
> #include <math.h>
>
> int main (void) {
> float a,b;
>
> a = 1.2345;
> b = exp(a) + sin(a) + log(a);
> P1OUT = (char)b;
>
> return
> CPUOFF;
> }
> /**************************************************************************
>*******/
>
> with the command
>
> msp430-gcc -g -O2 -mmcu=msp430x149 -lm dummyprogram.c -o dummyprogram.elf
>
> I get the errors
>
> .. undefined reference to `exp'
> .. undefined reference to `sin'
> .. undefined reference to `log'
>
> If I change the command to
>
> msp430-gcc -g -O2 -mmcu=msp430x149 dummyprogram.c -o dummyprogram.elf -lm
>
> I get only the errors
>
> .. undefined reference to `exp'
> .. undefined reference to `log'
>
>
> The option -lm is given everytime and therefore math.h should be linked to
> the program, but it fails. It fails completely, if -lm is given as one of
> the first options. If it is given at the end of the command line, the
> sin(x) function from math.h is linked, but none of the other tested
> functions.
>
> Where is my error? Is it a bug of my old MSPGCC version?
>
> Thanks for help!
> Ralf
>
>
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