×

SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

Member #548552

Member Since: April 24, 2014

Country: United States

  • The negative numbers are probably in a format called Two’s complement, which is a convention for storing negative numbers as binary. In two’s complement, if the most significant bit is set, the number is negative. To get the magnitude of the negative number, you invert it and add one. e.g.:

    if(value & 0x8000) {
        negative = true;
        value = (~value) + 1;
    }
    

No public wish lists :(