| // run | |
| // Copyright 2009 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. | |
| // Test implicit and explicit conversions of constants. | |
| package main | |
| const ( | |
| ci8 = -1 << 7 | |
| ci16 = -1<<15 + 100 | |
| ci32 = -1<<31 + 100000 | |
| ci64 = -1<<63 + 10000000001 | |
| cu8 = 1<<8 - 1 | |
| cu16 = 1<<16 - 1234 | |
| cu32 = 1<<32 - 1234567 | |
| cu64 = 1<<64 - 1234567890123 | |
| cf32 = 1e8 + 0.5 | |
| cf64 = -1e8 + 0.5 | |
| ) | |
| var ( | |
| i8 int8 = ci8 | |
| i16 int16 = ci16 | |
| i32 int32 = ci32 | |
| i64 int64 = ci64 | |
| u8 uint8 = cu8 | |
| u16 uint16 = cu16 | |
| u32 uint32 = cu32 | |
| u64 uint64 = cu64 | |
| // f32 float32 = 1e8 + 0.5 | |
| // f64 float64 = -1e8 + 0.5 | |
| ) | |
| func chki8(i, v int8) { | |
| if i != v { | |
| println(i, "!=", v) | |
| panic("fail") | |
| } | |
| } | |
| func chki16(i, v int16) { | |
| if i != v { | |
| println(i, "!=", v) | |
| panic("fail") | |
| } | |
| } | |
| func chki32(i, v int32) { | |
| if i != v { | |
| println(i, "!=", v) | |
| panic("fail") | |
| } | |
| } | |
| func chki64(i, v int64) { | |
| if i != v { | |
| println(i, "!=", v) | |
| panic("fail") | |
| } | |
| } | |
| func chku8(i, v uint8) { | |
| if i != v { | |
| println(i, "!=", v) | |
| panic("fail") | |
| } | |
| } | |
| func chku16(i, v uint16) { | |
| if i != v { | |
| println(i, "!=", v) | |
| panic("fail") | |
| } | |
| } | |
| func chku32(i, v uint32) { | |
| if i != v { | |
| println(i, "!=", v) | |
| panic("fail") | |
| } | |
| } | |
| func chku64(i, v uint64) { | |
| if i != v { | |
| println(i, "!=", v) | |
| panic("fail") | |
| } | |
| } | |
| //func chkf32(f, v float32) { if f != v { println(f, "!=", v); panic("fail") } } | |
| //func chkf64(f, v float64) { if f != v { println(f, "!=", v); panic("fail") } } | |
| func main() { | |
| chki8(int8(i8), ci8&0xff-1<<8) | |
| chki8(int8(i16), ci16&0xff) | |
| chki8(int8(i32), ci32&0xff-1<<8) | |
| chki8(int8(i64), ci64&0xff) | |
| chki8(int8(u8), cu8&0xff-1<<8) | |
| chki8(int8(u16), cu16&0xff) | |
| chki8(int8(u32), cu32&0xff) | |
| chki8(int8(u64), cu64&0xff) | |
| // chki8(int8(f32), 0) | |
| // chki8(int8(f64), 0) | |
| chki16(int16(i8), ci8&0xffff-1<<16) | |
| chki16(int16(i16), ci16&0xffff-1<<16) | |
| chki16(int16(i32), ci32&0xffff-1<<16) | |
| chki16(int16(i64), ci64&0xffff-1<<16) | |
| chki16(int16(u8), cu8&0xffff) | |
| chki16(int16(u16), cu16&0xffff-1<<16) | |
| chki16(int16(u32), cu32&0xffff) | |
| chki16(int16(u64), cu64&0xffff-1<<16) | |
| // chki16(int16(f32), 0) | |
| // chki16(int16(f64), 0) | |
| chki32(int32(i8), ci8&0xffffffff-1<<32) | |
| chki32(int32(i16), ci16&0xffffffff-1<<32) | |
| chki32(int32(i32), ci32&0xffffffff-1<<32) | |
| chki32(int32(i64), ci64&0xffffffff) | |
| chki32(int32(u8), cu8&0xffffffff) | |
| chki32(int32(u16), cu16&0xffffffff) | |
| chki32(int32(u32), cu32&0xffffffff-1<<32) | |
| chki32(int32(u64), cu64&0xffffffff-1<<32) | |
| // chki32(int32(f32), 0) | |
| // chki32(int32(f64), 0) | |
| chki64(int64(i8), ci8&0xffffffffffffffff-1<<64) | |
| chki64(int64(i16), ci16&0xffffffffffffffff-1<<64) | |
| chki64(int64(i32), ci32&0xffffffffffffffff-1<<64) | |
| chki64(int64(i64), ci64&0xffffffffffffffff-1<<64) | |
| chki64(int64(u8), cu8&0xffffffffffffffff) | |
| chki64(int64(u16), cu16&0xffffffffffffffff) | |
| chki64(int64(u32), cu32&0xffffffffffffffff) | |
| chki64(int64(u64), cu64&0xffffffffffffffff-1<<64) | |
| // chki64(int64(f32), 0) | |
| // chki64(int64(f64), 0) | |
| chku8(uint8(i8), ci8&0xff) | |
| chku8(uint8(i16), ci16&0xff) | |
| chku8(uint8(i32), ci32&0xff) | |
| chku8(uint8(i64), ci64&0xff) | |
| chku8(uint8(u8), cu8&0xff) | |
| chku8(uint8(u16), cu16&0xff) | |
| chku8(uint8(u32), cu32&0xff) | |
| chku8(uint8(u64), cu64&0xff) | |
| // chku8(uint8(f32), 0) | |
| // chku8(uint8(f64), 0) | |
| chku16(uint16(i8), ci8&0xffff) | |
| chku16(uint16(i16), ci16&0xffff) | |
| chku16(uint16(i32), ci32&0xffff) | |
| chku16(uint16(i64), ci64&0xffff) | |
| chku16(uint16(u8), cu8&0xffff) | |
| chku16(uint16(u16), cu16&0xffff) | |
| chku16(uint16(u32), cu32&0xffff) | |
| chku16(uint16(u64), cu64&0xffff) | |
| // chku16(uint16(f32), 0) | |
| // chku16(uint16(f64), 0) | |
| chku32(uint32(i8), ci8&0xffffffff) | |
| chku32(uint32(i16), ci16&0xffffffff) | |
| chku32(uint32(i32), ci32&0xffffffff) | |
| chku32(uint32(i64), ci64&0xffffffff) | |
| chku32(uint32(u8), cu8&0xffffffff) | |
| chku32(uint32(u16), cu16&0xffffffff) | |
| chku32(uint32(u32), cu32&0xffffffff) | |
| chku32(uint32(u64), cu64&0xffffffff) | |
| // chku32(uint32(f32), 0) | |
| // chku32(uint32(f64), 0) | |
| chku64(uint64(i8), ci8&0xffffffffffffffff) | |
| chku64(uint64(i16), ci16&0xffffffffffffffff) | |
| chku64(uint64(i32), ci32&0xffffffffffffffff) | |
| chku64(uint64(i64), ci64&0xffffffffffffffff) | |
| chku64(uint64(u8), cu8&0xffffffffffffffff) | |
| chku64(uint64(u16), cu16&0xffffffffffffffff) | |
| chku64(uint64(u32), cu32&0xffffffffffffffff) | |
| chku64(uint64(u64), cu64&0xffffffffffffffff) | |
| // chku64(uint64(f32), 0) | |
| // chku64(uint64(f64), 0) | |
| } |