1 files changed, 181 insertions, 0 deletions
diff --git a/test/intcvt.go b/test/intcvt.go
new file mode 100644
index 0000000..3920528
--- /dev/null
+++ b/test/intcvt.go
@@ -0,0 +1,181 @@
+// 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)
+}