Binary literal macro

binLiteral.c

#include <stdio.h>
#include <stdlib.h>

#define BIN_LITERAL_8(bin) \
  ( \
    ((0x0000000f & (0x ## bin))       != 0 ? 1        : 0) | \
    ((0x0000000f & (0x ## bin >> 4))  != 0 ? (1 << 1) : 0) | \
    ((0x0000000f & (0x ## bin >> 8))  != 0 ? (1 << 2) : 0) | \
    ((0x0000000f & (0x ## bin >> 12)) != 0 ? (1 << 3) : 0) | \
    ((0x0000000f & (0x ## bin >> 16)) != 0 ? (1 << 4) : 0) | \
    ((0x0000000f & (0x ## bin >> 20)) != 0 ? (1 << 5) : 0) | \
    ((0x0000000f & (0x ## bin >> 24)) != 0 ? (1 << 6) : 0) | \
    ((0x0000000f & (0x ## bin >> 28)) != 0 ? (1 << 7) : 0) \
  )
#define BIN_LITERAL_16(bin1, bin2) \
  ((BIN_LITERAL_8(bin1) << 8) | BIN_LITERAL_8(bin2))
#define BIN_LITERAL_24(bin1, bin2) \
  ( \
    (BIN_LITERAL_8(bin1) << 16) | \
    (BIN_LITERAL_8(bin2) << 8) | \
    BIN_LITERAL_8(bin3) \
  )
#define BIN_LITERAL_32(bin1, bin2, bin3, bin4) \
  ((BIN_LITERAL_16(bin1, bin2) << 16) | BIN_LITERAL_16(bin3, bin4))


int
main(void)
{
  printf("%d\n", BIN_LITERAL_8(00000001));
  printf("%d\n", BIN_LITERAL_8(00000010));
  printf("%d\n", BIN_LITERAL_8(00000100));
  printf("%d\n", BIN_LITERAL_8(00001111));
  printf("%d\n", (short) BIN_LITERAL_16(11111111, 11110000));
  printf("%d\n", BIN_LITERAL_32(01111111, 11111111, 11111111, 11111111));
  return EXIT_SUCCESS;
}