Reverse bit pattern in C

Question

I am converting a number to binary and have to use putchar to output each number.

The problem is that I am getting the order in reverse.

Is the

Answer 1

Here are functions I've used to reverse bits in a byte and reverse bytes in a quad.

inline unsigned char reverse(unsigned char b) {
    return (b&1 << 7)
         | (b&2 << 5)
         | (b&4 << 3)
         | (b&8 << 1)
         | (b&0x10 >> 1)
         | (b&0x20 >> 3)
         | (b&0x40 >> 5)
         | (b&0x80 >> 7);
}

inline unsigned long wreverse(unsigned long w) {
    return ( ( w     &0xFF) << 24)
         | ( ((w>>8) &0xFF) << 16)
         | ( ((w>>16)&0xFF) << 8)
         | ( ((w>>24)&0xFF) );
}