public function ParagonIE_Sodium_Core32_Int32::subInt32 in Automatic Updates 7

Same name and namespace in other branches

1. 8 vendor/paragonie/sodium_compat/src/Core32/Int32.php \ParagonIE_Sodium_Core32_Int32::subInt32()

Subtract two int32 objects from each other

Parameters

ParagonIE_Sodium_Core32_Int32 $b:

Return value

ParagonIE_Sodium_Core32_Int32

File

vendor/paragonie/sodium_compat/src/Core32/Int32.php, line 679

Class

ParagonIE_Sodium_Core32_Int32

Class ParagonIE_Sodium_Core32_Int32

Code

public function subInt32(ParagonIE_Sodium_Core32_Int32 $b) {
  $return = new ParagonIE_Sodium_Core32_Int32();
  $return->unsignedInt = $this->unsignedInt;

  /** @var int $tmp */
  $tmp = $this->limbs[1] - ($b->limbs[1] & 0xffff);

  /** @var int $carry */
  $carry = $tmp >> 16;
  $return->limbs[1] = (int) ($tmp & 0xffff);

  /** @var int $tmp */
  $tmp = $this->limbs[0] - ($b->limbs[0] & 0xffff) + $carry;
  $return->limbs[0] = (int) ($tmp & 0xffff);
  return $return;
}