Nios/saturate2

Sometimes when doing arithmetic, it is better to "saturate" (or clamp) numbers that overflow to the maximum or minimum possible value rather than wrap around.

Write a function that will convert a signed 32-bit number to (signed) 8 bits. If the 32-bit number is too big to fit, saturate (or clamp) the output to the closest possible signed 8-bit value. Since the output is an 8 bit value, the upper 24 bits of the return value should be zero.

char saturate(int n);

Sample Input

0x123

Sample Output

0x7f

# A test case to test your function with
.global _start
_start:
    movia r4, 0x123    # First parameter is always in r4
    call saturate
    br _start        # End of testing code

# Convert signed 32 bit to 8 bit, with saturation
saturate:

Write your solution here

Upload a source file...

nios/saturate2

nios/saturatePrevious

Nextnios/bits1

Nios/saturate2

From ASMBits

Sample Input

Sample Output

Write your solution here

Or upload a file

Solution