src/test/ui/consts/const-int-conversion-rpass.rs

   1 // run-pass
   2
   3 #![feature(const_int_conversion)]
   4
   5 const REVERSE: u32 = 0x12345678_u32.reverse_bits();
   6 const FROM_BE_BYTES: i32 = i32::from_be_bytes([0x12, 0x34, 0x56, 0x78]);
   7 const FROM_LE_BYTES: i32 = i32::from_le_bytes([0x12, 0x34, 0x56, 0x78]);
   8 const FROM_NE_BYTES: i32 = i32::from_be(i32::from_ne_bytes([0x80, 0, 0, 0]));
   9 const TO_BE_BYTES: [u8; 4] = 0x12_34_56_78_i32.to_be_bytes();
  10 const TO_LE_BYTES: [u8; 4] = 0x12_34_56_78_i32.to_le_bytes();
  11 const TO_NE_BYTES: [u8; 4] = i32::min_value().to_be().to_ne_bytes();
  12
  13 fn main() {
  14     assert_eq!(REVERSE, 0x1e6a2c48);
  15     assert_eq!(FROM_BE_BYTES, 0x12_34_56_78);
  16     assert_eq!(FROM_LE_BYTES, 0x78_56_34_12);
  17     assert_eq!(FROM_NE_BYTES, i32::min_value());
  18     assert_eq!(TO_BE_BYTES, [0x12, 0x34, 0x56, 0x78]);
  19     assert_eq!(TO_LE_BYTES, [0x78, 0x56, 0x34, 0x12]);
  20     assert_eq!(TO_NE_BYTES, [0x80, 0, 0, 0]);
  21 }