I cannot use the math funciton,such as log()
Wed Nov 29 19:27:00 GMT 2006
On 27 November 2006 14:14, Tan Ping wrote:
> When I use the math function , the program can be complied
> successfully.But when I download it into the s3c2410 board and run it,
> the result is wrong?
> What is the matter? Can you help me?
> I use the arm-linux-gcc-2.95.3,
That's rather old, but it's probably not the cause.
> the code is :
> #include <math.h>
> #include <stdio.h>
> int main()
> float a,b;
> The result of running is:
> the b's value is wrong!
I think the heart of the problem might be revealed in the answer to these
1) Does the particular ARM cpu on your board have an FPU?
2) Is the version of gcc you're using configured for hardware or software fp?
Can't think of a witty .sigline today....
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