Arm/saturate

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

Write a function that will convert an unsigned 32-bit number to 16 bits. If the 32-bit number is too big to fit, saturate (or clamp) the output to the maximum possible unsigned 16-bit value.

unsigned short saturate(unsigned int n);

Expected solution length: Around 3 lines.

Sample Input

0x12345

Sample Output

0xffff

// A test case to test your function with
.global _start
_start:
    ldr r0, =0x12345    // First parameter is always in r0
    bl saturate
    b _start        // End of testing code

// Convert unsigned 32 bit to 16 bit, with saturation
saturate:

Write your solution here

Upload a source file...

arm/saturate

arm/extendPrevious

Nextarm/saturate2

Arm/saturate

From ASMBits

Sample Input

Sample Output

Write your solution here

Or upload a file

Solution