PIC Microcontoller Basic Math Subtraction Methods

• bcd packed from Scott Dattalo
• 16bit with borrow from Rudy Wieser
• 16bit substract with valid carry & zero flag from Christian Blondin
• 32bit by Dwayne Reid and Regulus Berdin
• 32bit by Eddy Gora
• 32-bit signed integer math routines. add, subtract, multiply, divide, round, sqrt, bin2dec, dec2bin. By Peter Hemsley.
• 32-bit integer math routines: add, subtract by Brian Beard as adapted from AN526

David A Cary Says: " There is a close relationship between subtracting 2 numbers and comparing 2 numbers. "

Comments:

Interested:

See also:

• sk99890008@yahoo.com.tw refers to " http://i.imgur.com/ivntBxv.png It's that right?" James Newton of MassMind replies: See "Difference between carry and overflow"