Help to optimize

[TheDirty 33]

The error in the code is mentioned here:

http://www.rcgroups.com/forums/showthread.php?t=1197534

 

This is the code the I finally settled on in my own test project:

  //calculate the temperature
 x1 = (ut - ac6) * ac5 >> 15;
 x2 = ((int32_t) mc << 11) / (x1 + md);
 b5 = x1 + x2;
 *t = (b5 + 8) >> 4;

 //calculate the pressure
 b6 = b5 - 4000;
 x1 = (b2 * (b6 * b6 >> 12)) >> 11;
 x2 = ac2 * b6 >> 11;
 x3 = x1 + x2;
 b3 = (((int32_t) ac1 * 4 + x3) << BMP085_OSS) >> 2;
 x1 = ac3 * b6 >> 13;
 x2 = (b1 * (b6 * b6 >> 12)) >> 16;
 x3 = ((x1 + x2) + 2) >> 2;
 b4 = (ac4 * (uint32_t) (x3 + 32768)) >> 15;
 b7 = ((uint32_t) up - b3) * (50000 >> BMP085_OSS);
 *p = b7 < 0x80000000 ? (b7 * 2) / b4 : (b7 / b4) * 2;

 x1 = (*p >> 8) * (*p >> 8);
 x1 = (x1 * 3038) >> 16;
 x2 = (-7357 * *p) >> 16;
 *p = *p + ((x1 + x2 + 3791) >> 4);

[pfactorial 7]

I'm building a small project with a msp430G2231 and a pressure sensor (bmp085) connected through i2c. I'm also using a snippet of code to output code through serial port.

My problem is that the code compiled exceeds the flash size of the uc, but I'm sure there are things that can be optimized. So I'm asking to more expert people about how to optimize it.

Thanks in advance

When I try to run the code, it says a lot of stuff is undefined...

 

EDIT: Never mind I was just using a different compiler...