Nios/decstr2

Write a function that reads an ASCII null-terminated string containing decimal digits, and returns the value of the number. The string may start with '-' to indicate a negative number, and the remaining characters are decimal digits. The number is guaranteed to fit within an signed 32-bit number.

Sample Input

"1234"

Sample Output

r2=1234 (or 0x4d2)

# A test case to test your function with
Str: .string "1234"

.global _start
_start:
    movia r4, Str    
    call decstr
    br _start        # End of testing code

# Parse a decimal string
decstr:

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nios/decstr2

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Nios/decstr2

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