| // Copyright 2019 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // This file tests various representations of literals |
| // and compares them with literals or constant expressions |
| // of equal values. |
| |
| package literals |
| |
| func _() { |
| // 0-octals |
| assert(0_123 == 0123) |
| assert(0123_456 == 0123456) |
| |
| // decimals |
| assert(1_234 == 1234) |
| assert(1_234_567 == 1234567) |
| |
| // hexadecimals |
| assert(0X_0 == 0) |
| assert(0X_1234 == 0x1234) |
| assert(0X_CAFE_f00d == 0xcafef00d) |
| |
| // octals |
| assert(0o0 == 0) |
| assert(0o1234 == 01234) |
| assert(0o01234567 == 01234567) |
| |
| assert(0O0 == 0) |
| assert(0O1234 == 01234) |
| assert(0O01234567 == 01234567) |
| |
| assert(0o_0 == 0) |
| assert(0o_1234 == 01234) |
| assert(0o0123_4567 == 01234567) |
| |
| assert(0O_0 == 0) |
| assert(0O_1234 == 01234) |
| assert(0O0123_4567 == 01234567) |
| |
| // binaries |
| assert(0b0 == 0) |
| assert(0b1011 == 0xb) |
| assert(0b00101101 == 0x2d) |
| |
| assert(0B0 == 0) |
| assert(0B1011 == 0xb) |
| assert(0B00101101 == 0x2d) |
| |
| assert(0b_0 == 0) |
| assert(0b10_11 == 0xb) |
| assert(0b_0010_1101 == 0x2d) |
| |
| // decimal floats |
| assert(1_2_3. == 123.) |
| assert(0_123. == 123.) |
| |
| assert(0_0e0 == 0.) |
| assert(1_2_3e0 == 123.) |
| assert(0_123e0 == 123.) |
| |
| assert(0e-0_0 == 0.) |
| assert(1_2_3E+0 == 123.) |
| assert(0123E1_2_3 == 123e123) |
| |
| assert(0.e+1 == 0.) |
| assert(123.E-1_0 == 123e-10) |
| assert(01_23.e123 == 123e123) |
| |
| assert(.0e-1 == .0) |
| assert(.123E+10 == .123e10) |
| assert(.0123E123 == .0123e123) |
| |
| assert(1_2_3.123 == 123.123) |
| assert(0123.01_23 == 123.0123) |
| |
| // hexadecimal floats |
| assert(0x0.p+0 == 0.) |
| assert(0Xdeadcafe.p-10 == 0xdeadcafe/1024.0) |
| assert(0x1234.P84 == 0x1234000000000000000000000) |
| |
| assert(0x.1p-0 == 1./16) |
| assert(0X.deadcafep4 == 1.0*0xdeadcafe/0x10000000) |
| assert(0x.1234P+12 == 1.0*0x1234/0x10) |
| |
| assert(0x0p0 == 0.) |
| assert(0Xdeadcafep+1 == 0x1bd5b95fc) |
| assert(0x1234P-10 == 0x1234/1024.0) |
| |
| assert(0x0.0p0 == 0.) |
| assert(0Xdead.cafep+1 == 1.0*0x1bd5b95fc/0x10000) |
| assert(0x12.34P-10 == 1.0*0x1234/0x40000) |
| |
| assert(0Xdead_cafep+1 == 0xdeadcafep+1) |
| assert(0x_1234P-10 == 0x1234p-10) |
| |
| assert(0X_dead_cafe.p-10 == 0xdeadcafe.p-10) |
| assert(0x12_34.P1_2_3 == 0x1234.p123) |
| |
| assert(1_234i == 1234i) |
| assert(1_234_567i == 1234567i) |
| |
| assert(0.i == 0i) |
| assert(123.i == 123i) |
| assert(0123.i == 123i) |
| |
| assert(0.e+1i == 0i) |
| assert(123.E-1_0i == 123e-10i) |
| assert(01_23.e123i == 123e123i) |
| } |
