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Diffstat (limited to 'libgo/go/go/types/testdata/const1.src')
| -rw-r--r-- | libgo/go/go/types/testdata/const1.src | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/libgo/go/go/types/testdata/const1.src b/libgo/go/go/types/testdata/const1.src new file mode 100644 index 0000000000..d82770464f --- /dev/null +++ b/libgo/go/go/types/testdata/const1.src @@ -0,0 +1,322 @@ +// Copyright 2012 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. + +// constant conversions + +package const1 + +const( + mi = ^int(0) + mu = ^uint(0) + mp = ^uintptr(0) + + logSizeofInt = uint(mi>>8&1 + mi>>16&1 + mi>>32&1) + logSizeofUint = uint(mu>>8&1 + mu>>16&1 + mu>>32&1) + logSizeofUintptr = uint(mp>>8&1 + mp>>16&1 + mp>>32&1) +) + +const ( + minInt8 = -1<<(8<<iota - 1) + minInt16 + minInt32 + minInt64 + minInt = -1<<(8<<logSizeofInt - 1) +) + +const ( + maxInt8 = 1<<(8<<iota - 1) - 1 + maxInt16 + maxInt32 + maxInt64 + maxInt = 1<<(8<<logSizeofInt - 1) - 1 +) + +const ( + maxUint8 = 1<<(8<<iota) - 1 + maxUint16 + maxUint32 + maxUint64 + maxUint = 1<<(8<<logSizeofUint) - 1 + maxUintptr = 1<<(8<<logSizeofUintptr) - 1 +) + +const ( + smallestFloat32 = 1.0 / (1<<(127 - 1 + 23)) + smallestFloat64 = 1.0 / (1<<(1023 - 1 + 52)) +) + +const ( + _ = assert(smallestFloat32 > 0) + _ = assert(smallestFloat64 > 0) +) + +const ( + maxFloat32 = 1<<127 * (1<<24 - 1) / (1.0<<23) + maxFloat64 = 1<<1023 * (1<<53 - 1) / (1.0<<52) +) + +const ( + _ int8 = minInt8 /* ERROR "overflows" */ - 1 + _ int8 = minInt8 + _ int8 = maxInt8 + _ int8 = maxInt8 /* ERROR "overflows" */ + 1 + _ int8 = smallestFloat64 /* ERROR "truncated" */ + + _ = int8(minInt8 /* ERROR "cannot convert" */ - 1) + _ = int8(minInt8) + _ = int8(maxInt8) + _ = int8(maxInt8 /* ERROR "cannot convert" */ + 1) + _ = int8(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ int16 = minInt16 /* ERROR "overflows" */ - 1 + _ int16 = minInt16 + _ int16 = maxInt16 + _ int16 = maxInt16 /* ERROR "overflows" */ + 1 + _ int16 = smallestFloat64 /* ERROR "truncated" */ + + _ = int16(minInt16 /* ERROR "cannot convert" */ - 1) + _ = int16(minInt16) + _ = int16(maxInt16) + _ = int16(maxInt16 /* ERROR "cannot convert" */ + 1) + _ = int16(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ int32 = minInt32 /* ERROR "overflows" */ - 1 + _ int32 = minInt32 + _ int32 = maxInt32 + _ int32 = maxInt32 /* ERROR "overflows" */ + 1 + _ int32 = smallestFloat64 /* ERROR "truncated" */ + + _ = int32(minInt32 /* ERROR "cannot convert" */ - 1) + _ = int32(minInt32) + _ = int32(maxInt32) + _ = int32(maxInt32 /* ERROR "cannot convert" */ + 1) + _ = int32(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ int64 = minInt64 /* ERROR "overflows" */ - 1 + _ int64 = minInt64 + _ int64 = maxInt64 + _ int64 = maxInt64 /* ERROR "overflows" */ + 1 + _ int64 = smallestFloat64 /* ERROR "truncated" */ + + _ = int64(minInt64 /* ERROR "cannot convert" */ - 1) + _ = int64(minInt64) + _ = int64(maxInt64) + _ = int64(maxInt64 /* ERROR "cannot convert" */ + 1) + _ = int64(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ int = minInt /* ERROR "overflows" */ - 1 + _ int = minInt + _ int = maxInt + _ int = maxInt /* ERROR "overflows" */ + 1 + _ int = smallestFloat64 /* ERROR "truncated" */ + + _ = int(minInt /* ERROR "cannot convert" */ - 1) + _ = int(minInt) + _ = int(maxInt) + _ = int(maxInt /* ERROR "cannot convert" */ + 1) + _ = int(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ uint8 = 0 /* ERROR "overflows" */ - 1 + _ uint8 = 0 + _ uint8 = maxUint8 + _ uint8 = maxUint8 /* ERROR "overflows" */ + 1 + _ uint8 = smallestFloat64 /* ERROR "truncated" */ + + _ = uint8(0 /* ERROR "cannot convert" */ - 1) + _ = uint8(0) + _ = uint8(maxUint8) + _ = uint8(maxUint8 /* ERROR "cannot convert" */ + 1) + _ = uint8(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ uint16 = 0 /* ERROR "overflows" */ - 1 + _ uint16 = 0 + _ uint16 = maxUint16 + _ uint16 = maxUint16 /* ERROR "overflows" */ + 1 + _ uint16 = smallestFloat64 /* ERROR "truncated" */ + + _ = uint16(0 /* ERROR "cannot convert" */ - 1) + _ = uint16(0) + _ = uint16(maxUint16) + _ = uint16(maxUint16 /* ERROR "cannot convert" */ + 1) + _ = uint16(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ uint32 = 0 /* ERROR "overflows" */ - 1 + _ uint32 = 0 + _ uint32 = maxUint32 + _ uint32 = maxUint32 /* ERROR "overflows" */ + 1 + _ uint32 = smallestFloat64 /* ERROR "truncated" */ + + _ = uint32(0 /* ERROR "cannot convert" */ - 1) + _ = uint32(0) + _ = uint32(maxUint32) + _ = uint32(maxUint32 /* ERROR "cannot convert" */ + 1) + _ = uint32(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ uint64 = 0 /* ERROR "overflows" */ - 1 + _ uint64 = 0 + _ uint64 = maxUint64 + _ uint64 = maxUint64 /* ERROR "overflows" */ + 1 + _ uint64 = smallestFloat64 /* ERROR "truncated" */ + + _ = uint64(0 /* ERROR "cannot convert" */ - 1) + _ = uint64(0) + _ = uint64(maxUint64) + _ = uint64(maxUint64 /* ERROR "cannot convert" */ + 1) + _ = uint64(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ uint = 0 /* ERROR "overflows" */ - 1 + _ uint = 0 + _ uint = maxUint + _ uint = maxUint /* ERROR "overflows" */ + 1 + _ uint = smallestFloat64 /* ERROR "truncated" */ + + _ = uint(0 /* ERROR "cannot convert" */ - 1) + _ = uint(0) + _ = uint(maxUint) + _ = uint(maxUint /* ERROR "cannot convert" */ + 1) + _ = uint(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ uintptr = 0 /* ERROR "overflows" */ - 1 + _ uintptr = 0 + _ uintptr = maxUintptr + _ uintptr = maxUintptr /* ERROR "overflows" */ + 1 + _ uintptr = smallestFloat64 /* ERROR "truncated" */ + + _ = uintptr(0 /* ERROR "cannot convert" */ - 1) + _ = uintptr(0) + _ = uintptr(maxUintptr) + _ = uintptr(maxUintptr /* ERROR "cannot convert" */ + 1) + _ = uintptr(smallestFloat64 /* ERROR "cannot convert" */) +) + +const ( + _ float32 = minInt64 + _ float64 = minInt64 + _ complex64 = minInt64 + _ complex128 = minInt64 + + _ = float32(minInt64) + _ = float64(minInt64) + _ = complex64(minInt64) + _ = complex128(minInt64) +) + +const ( + _ float32 = maxUint64 + _ float64 = maxUint64 + _ complex64 = maxUint64 + _ complex128 = maxUint64 + + _ = float32(maxUint64) + _ = float64(maxUint64) + _ = complex64(maxUint64) + _ = complex128(maxUint64) +) + +// TODO(gri) find smaller deltas below + +const delta32 = maxFloat32/(1 << 23) + +const ( + _ float32 = - /* ERROR "overflow" */ (maxFloat32 + delta32) + _ float32 = -maxFloat32 + _ float32 = maxFloat32 + _ float32 = maxFloat32 /* ERROR "overflow" */ + delta32 + + _ = float32(- /* ERROR "cannot convert" */ (maxFloat32 + delta32)) + _ = float32(-maxFloat32) + _ = float32(maxFloat32) + _ = float32(maxFloat32 /* ERROR "cannot convert" */ + delta32) + + _ = assert(float32(smallestFloat32) == smallestFloat32) + _ = assert(float32(smallestFloat32/2) == 0) + _ = assert(float32(smallestFloat64) == 0) + _ = assert(float32(smallestFloat64/2) == 0) +) + +const delta64 = maxFloat64/(1 << 52) + +const ( + _ float64 = - /* ERROR "overflow" */ (maxFloat64 + delta64) + _ float64 = -maxFloat64 + _ float64 = maxFloat64 + _ float64 = maxFloat64 /* ERROR "overflow" */ + delta64 + + _ = float64(- /* ERROR "cannot convert" */ (maxFloat64 + delta64)) + _ = float64(-maxFloat64) + _ = float64(maxFloat64) + _ = float64(maxFloat64 /* ERROR "cannot convert" */ + delta64) + + _ = assert(float64(smallestFloat32) == smallestFloat32) + _ = assert(float64(smallestFloat32/2) == smallestFloat32/2) + _ = assert(float64(smallestFloat64) == smallestFloat64) + _ = assert(float64(smallestFloat64/2) == 0) +) + +const ( + _ complex64 = - /* ERROR "overflow" */ (maxFloat32 + delta32) + _ complex64 = -maxFloat32 + _ complex64 = maxFloat32 + _ complex64 = maxFloat32 /* ERROR "overflow" */ + delta32 + + _ = complex64(- /* ERROR "cannot convert" */ (maxFloat32 + delta32)) + _ = complex64(-maxFloat32) + _ = complex64(maxFloat32) + _ = complex64(maxFloat32 /* ERROR "cannot convert" */ + delta32) +) + +const ( + _ complex128 = - /* ERROR "overflow" */ (maxFloat64 + delta64) + _ complex128 = -maxFloat64 + _ complex128 = maxFloat64 + _ complex128 = maxFloat64 /* ERROR "overflow" */ + delta64 + + _ = complex128(- /* ERROR "cannot convert" */ (maxFloat64 + delta64)) + _ = complex128(-maxFloat64) + _ = complex128(maxFloat64) + _ = complex128(maxFloat64 /* ERROR "cannot convert" */ + delta64) +) + +// Initialization of typed constant and conversion are the same: +const ( + f32 = 1 + smallestFloat32 + x32 float32 = f32 + y32 = float32(f32) + _ = assert(x32 - y32 == 0) +) + +const ( + f64 = 1 + smallestFloat64 + x64 float64 = f64 + y64 = float64(f64) + _ = assert(x64 - y64 == 0) +) + +const ( + _ = int8(-1) << 7 + _ = int8 /* ERROR "overflows" */ (-1) << 8 + + _ = uint32(1) << 31 + _ = uint32 /* ERROR "overflows" */ (1) << 32 +) |