mirror of
https://github.com/golang/go
synced 2024-11-24 07:50:13 -07:00
182 lines
4.3 KiB
Go
182 lines
4.3 KiB
Go
// 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)
|
|
}
|