Arm/bcd2

Binary-coded decimal is a method to represent decimal numbers encoded into binary. It uses each group of 4 bits (which can normally represent numbers from 0 to 15) to represent one decimal digit (of values 0 to 9). Thus, the number 10 (or 0xa) is encoded in BCD as 0x10.

Write a function that converts a number into its BCD representation. You are guaranteed that the input number will be between 0 and 15.

Expected solution length: Around 4 lines.

Sample Input

Sample Output

0x10

// A test case to test your function with
.global _start
_start:
    ldr r0, =10    // First parameter is always in r0
    bl bcd
    b _start        // End of testing code

// Convert a number to BCD representation
bcd:

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arm/bcd2

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Arm/bcd2

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Sample Input

Sample Output

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