void transform()

in include/ylt/standalone/cinatra/sha1.hpp [80:173]

• 92 lines of code
• 1 McCabe index (conditional complexity)

void transform(std::uint32_t digest[], std::uint32_t block[BLOCK_INTS]) {
  std::uint32_t a = digest[0];
  std::uint32_t b = digest[1];
  std::uint32_t c = digest[2];
  std::uint32_t d = digest[3];
  std::uint32_t e = digest[4];

  R0(block, a, b, c, d, e, 0);
  R0(block, e, a, b, c, d, 1);
  R0(block, d, e, a, b, c, 2);
  R0(block, c, d, e, a, b, 3);
  R0(block, b, c, d, e, a, 4);
  R0(block, a, b, c, d, e, 5);
  R0(block, e, a, b, c, d, 6);
  R0(block, d, e, a, b, c, 7);
  R0(block, c, d, e, a, b, 8);
  R0(block, b, c, d, e, a, 9);
  R0(block, a, b, c, d, e, 10);
  R0(block, e, a, b, c, d, 11);
  R0(block, d, e, a, b, c, 12);
  R0(block, c, d, e, a, b, 13);
  R0(block, b, c, d, e, a, 14);
  R0(block, a, b, c, d, e, 15);
  R1(block, e, a, b, c, d, 0);
  R1(block, d, e, a, b, c, 1);
  R1(block, c, d, e, a, b, 2);
  R1(block, b, c, d, e, a, 3);
  R2(block, a, b, c, d, e, 4);
  R2(block, e, a, b, c, d, 5);
  R2(block, d, e, a, b, c, 6);
  R2(block, c, d, e, a, b, 7);
  R2(block, b, c, d, e, a, 8);
  R2(block, a, b, c, d, e, 9);
  R2(block, e, a, b, c, d, 10);
  R2(block, d, e, a, b, c, 11);
  R2(block, c, d, e, a, b, 12);
  R2(block, b, c, d, e, a, 13);
  R2(block, a, b, c, d, e, 14);
  R2(block, e, a, b, c, d, 15);
  R2(block, d, e, a, b, c, 0);
  R2(block, c, d, e, a, b, 1);
  R2(block, b, c, d, e, a, 2);
  R2(block, a, b, c, d, e, 3);
  R2(block, e, a, b, c, d, 4);
  R2(block, d, e, a, b, c, 5);
  R2(block, c, d, e, a, b, 6);
  R2(block, b, c, d, e, a, 7);
  R3(block, a, b, c, d, e, 8);
  R3(block, e, a, b, c, d, 9);
  R3(block, d, e, a, b, c, 10);
  R3(block, c, d, e, a, b, 11);
  R3(block, b, c, d, e, a, 12);
  R3(block, a, b, c, d, e, 13);
  R3(block, e, a, b, c, d, 14);
  R3(block, d, e, a, b, c, 15);
  R3(block, c, d, e, a, b, 0);
  R3(block, b, c, d, e, a, 1);
  R3(block, a, b, c, d, e, 2);
  R3(block, e, a, b, c, d, 3);
  R3(block, d, e, a, b, c, 4);
  R3(block, c, d, e, a, b, 5);
  R3(block, b, c, d, e, a, 6);
  R3(block, a, b, c, d, e, 7);
  R3(block, e, a, b, c, d, 8);
  R3(block, d, e, a, b, c, 9);
  R3(block, c, d, e, a, b, 10);
  R3(block, b, c, d, e, a, 11);
  R4(block, a, b, c, d, e, 12);
  R4(block, e, a, b, c, d, 13);
  R4(block, d, e, a, b, c, 14);
  R4(block, c, d, e, a, b, 15);
  R4(block, b, c, d, e, a, 0);
  R4(block, a, b, c, d, e, 1);
  R4(block, e, a, b, c, d, 2);
  R4(block, d, e, a, b, c, 3);
  R4(block, c, d, e, a, b, 4);
  R4(block, b, c, d, e, a, 5);
  R4(block, a, b, c, d, e, 6);
  R4(block, e, a, b, c, d, 7);
  R4(block, d, e, a, b, c, 8);
  R4(block, c, d, e, a, b, 9);
  R4(block, b, c, d, e, a, 10);
  R4(block, a, b, c, d, e, 11);
  R4(block, e, a, b, c, d, 12);
  R4(block, d, e, a, b, c, 13);
  R4(block, c, d, e, a, b, 14);
  R4(block, b, c, d, e, a, 15);

  digest[0] += a;
  digest[1] += b;
  digest[2] += c;
  digest[3] += d;
  digest[4] += e;
}