C251 Version 5.07b Product Update

• [C Run-Time Library]
  Corrected: the functions memcmp, hmemcmp, strcmp, strncmp, and hstrcmp now compare the memory content using unsigned char (instead of signed char) data types.
• [C251 Compiler]
  Corrected: problem with constant folding in address calculation. Example:

    unsigned char array[0x2000];
    unsigned long l1, l2;
  
    void foo(void)  {
    l1 = ((((unsigned long)array) + (0x100)) + (0x80));       // incorrectly calculated in previous versions
    l2 = ((((unsigned long)&(array[0])) + (0x100)) + (0x80)); // work-arround
  }
  

• [µVision4]
  This C251 release comes with µVision V4.22.00.

What's new?

• [C Run-Time Library]

§  Corrected: the function toint did not detect the value range 0x59 - 0x40 as invalid. Now the function returns -1 for these values.

§  Corrected: double numbers are incorrectly converted to float numbers when round-up is required. Example:

§                  double d = 3.9999999999123;  // needs round-up to 4.0 when converting to float

§                  float f;

§                  f = d;                       // incorrect result due to incorrect round-up

• [µVision4]
  This C251 release comes with µVision V4.14.16.