Function WriteLE32

src/simplicity/sha256.h:71–76

Unpacks 4 bytes from a 'uint_fast32_t' into an 'unsigned char' array in "little endian" order. * * Precondition: unsigned char ptr[4] */

 * Precondition: unsigned char ptr[4]
 */
static inline void WriteLE32(unsigned char* ptr, uint_fast32_t x) {
  ptr[3] = (unsigned char)(0xff & x >> 24);
  ptr[2] = 0xff & x >> 16;
  ptr[1] = 0xff & x >> 8;
  ptr[0] = 0xff & x;
}

/* Converts a given 'midstate' value to a 'hash' value as 32 bytes stored in an unsigned char array.
 *