$.$data

prompt$\_$a: $.$asciiz "Enter value for a: $"$

prompt$\_$b: $.$asciiz "Enter value for b: $"$

prompt$\_$c: $.$asciiz "Enter value for c: $"$

output$\_$solution: $.$asciiz "Quadratic Equation Solver v$0\mathrm{.}1$ by F$.$ Last

$"$

invalid$\_$input: $.$asciiz "Invalid input. Please enter a non$-$zero value for a and$/$or b$.$

$"$

imaginary$\_$roots: $.$asciiz "Roots are imaginary.

$"$

solution: $.$asciiz $"$x$1=\%\mathrm{.}2$f$,$ x$2=\%\mathrm{.}2$f

$"$

$.$text

$.$globl main

main:

# Print output header

li $v$0,4$

la $a$0,$ output$\_$solution

syscall

# Prompt user for coefficients

jal prompt$\_$coefficients

# Calculate discriminant

l$.$d $f$4,0($$f$12)$ # Load a into $f$4$

l$.$d $f$6,0($$f$14)$ # Load b into $f$6$

l$.$d $f$8,0($$f$16)$ # Load c into $f$8$

mul.d $f$10,$ $f$6,$ $f$6$ # b$^2$

mul.d $f$12,$ $f$4,$ $f$8$ # $4$ac

mul.d $f$12,$ $f$12,$ $f$2$ # $4$ac $*$ a

sub.d $f$10,$ $f$10,$ $f$12$ # b$^2-4$ac

mov.d $f$12,$ $f$10$ # Store discriminant

# Check for non$-$quadratic equation

beq $f$4,$ $f$0,$ not$\_$quadratic

beq $f$6,$ $f$0,$ not$\_$quadratic

# Check if roots are imaginary

blez $f$10,$ imaginary

# Calculate roots

sqrt$.$d $f$10,$ $f$10$

l$.$d $f$12,0($$f$12)$ # Load $-$b into $f$12$

neg.d $f$12,$ $f$12$ # $-$b

add.d $f$10,$ $f$12,$ $f$10$

div.d $f$10,$ $f$10,$ $f$4$ # x$1=(-$b $+$ sqrt$($b$^2-4$ac$))/2$a

l$.$d $f$12,0($$f$12)$ # Load $-$b into $f$12$

sub.d $f$12,$ $f$12,$ $f$10$

div.d $f$12,$ $f$12,$ $f$4$ # x$2=(-$b $-$ sqrt$($b$^2-4$ac$))/2$a

# Print solutions

li $v$0,2$

mov.d $f$12,$ $f$10$

syscall

li $v$0,4$

la $a$0,$ solution

syscall

mov.d $f$12,$ $f$10$

syscall

j exit

not$\_$quadratic:

# Print error message for non$-$quadratic equation

li $v$0,4$

la $a$0,$ invalid$\_$input

syscall

j exit

imaginary:

# Print error message for imaginary roots

li $v$0,4$

la $a$0,$ imaginary$\_$roots

syscall

j exit

prompt$\_$coefficients:

# Prompt for coefficient a

li $v$0,4$

la $a$0,$ prompt$\_$a

syscall

li $v$0,7$

syscall

mfc$1$ $f$12,$ $v$0$

# Prompt for coefficient b

li $v$0,4$

la $a$0,$ prompt$\_$b

syscall

li $v$0,7$

syscall

mfc$1$ $f$14,$ $v$0$

# Prompt for coefficient c

li $v$0,4$

la $a$0,$ prompt$\_$c

syscall

li $v$0,7$

syscall

mfc$1$ $f$16,$ $v$0$

jr $ra

exit:

# Exit program

li $v$0,10$

syscall