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mirror of https://github.com/golang/go synced 2024-11-18 15:34:53 -07:00
go/test/intcvt.go
Russ Cox 5d1d8a8258 integer conversions and test.
R=ken
OCL=29577
CL=29589
2009-05-29 09:17:35 -07:00

141 lines
4.3 KiB
Go

// $G $D/$F.go && $L $F.$A && ./$A.out
// 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.
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 { panicln(i, "!=", v) } }
func chki16(i, v int16) { if i != v { panicln(i, "!=", v) } }
func chki32(i, v int32) { if i != v { panicln(i, "!=", v) } }
func chki64(i, v int64) { if i != v { panicln(i, "!=", v) } }
func chku8(i, v uint8) { if i != v { panicln(i, "!=", v) } }
func chku16(i, v uint16) { if i != v { panicln(i, "!=", v) } }
func chku32(i, v uint32) { if i != v { panicln(i, "!=", v) } }
func chku64(i, v uint64) { if i != v { panicln(i, "!=", v) } }
//func chkf32(f, v float32) { if f != v { panicln(f, "!=", v) } }
//func chkf64(f, v float64) { if f != v { panicln(f, "!=", v) } }
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);
}