In this chapter, you’ll see a number of arithmetic instructions for integers. Floating-point arithmetic will be covered in a later chapter. Now is a good time to quickly review Chapter 2 on binary numbers.
Starting with Integer Arithmetic
Listing 9-1 shows the example code we will analyze.
; icalc.asm
extern printf
section .data
number1 dq 128 ; the numbers to be used to
number2 dq 19 ; show the arithmetic
neg_num dq -12 ; to show sign extension
fmt db "The numbers are %ld and %ld",10,0
fmtint db "%s %ld",10,0
sumi db "The ...
