swap_bits

Bits and representation24

Objective

Write a function that exchanges the upper nibble and the lower nibble of a byte and returns the result.

Steps

A byte is made of two groups of 4 bits called nibbles: the high nibble (bits 7-4) and the low nibble (bits 3-0).
Your function must swap those two nibbles and return the resulting byte.
For example, 0xF0 (high nibble: 0xF, low nibble: 0x0) becomes 0x0F.

examples

$ swap_bits(0xF0)

$ swap_bits(0xAB)

186

Constraints

Expected files

swap_bits.c

Allowed functions

None. Write every helper yourself.

Tests

Run the tests to grade your code

Build

01Swap 0xF0 → 0x0F

02Swap 0xAB → 0xBA

03Swap 0x10 → 0x01

04Swap 0x3C → 0xC3

05Swap 0x00 → 0x00

06Swap 0xFF → 0xFF

swap_bits

Objective

Write a function that exchanges the upper nibble and the lower nibble of a byte and returns the result.

Steps

A byte is made of two groups of 4 bits called nibbles: the high nibble (bits 7-4) and the low nibble (bits 3-0).
Your function must swap those two nibbles and return the resulting byte.
For example, 0xF0 (high nibble: 0xF, low nibble: 0x0) becomes 0x0F.

examples

$ swap_bits(0xF0)

$ swap_bits(0xAB)

186

Constraints

Expected files

swap_bits.c

Allowed functions

None. Write every helper yourself.

swap_bits

Bits and representation24

Objective

Write a function that exchanges the upper nibble and the lower nibble of a byte and returns the result.

Steps

A byte is made of two groups of 4 bits called nibbles: the high nibble (bits 7-4) and the low nibble (bits 3-0).
Your function must swap those two nibbles and return the resulting byte.
For example, 0xF0 (high nibble: 0xF, low nibble: 0x0) becomes 0x0F.

examples

$ swap_bits(0xF0)

$ swap_bits(0xAB)

186

Constraints

Expected files

swap_bits.c

Allowed functions

None. Write every helper yourself.

Tests

Run the tests to grade your code

Build

01Swap 0xF0 → 0x0F

02Swap 0xAB → 0xBA

03Swap 0x10 → 0x01

04Swap 0x3C → 0xC3

05Swap 0x00 → 0x00

06Swap 0xFF → 0xFF