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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:18:25 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:18:25 +0000 |
commit | 109be507377fe7f6e8819ac94041d3fdcdf6fd2f (patch) | |
tree | 2806a689f8fab4a2ec9fc949830ef270a91d667d /test/ken/modconst.go | |
parent | Initial commit. (diff) | |
download | golang-1.19-upstream.tar.xz golang-1.19-upstream.zip |
Adding upstream version 1.19.8.upstream/1.19.8upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/ken/modconst.go')
-rw-r--r-- | test/ken/modconst.go | 634 |
1 files changed, 634 insertions, 0 deletions
diff --git a/test/ken/modconst.go b/test/ken/modconst.go new file mode 100644 index 0000000..c27bf64 --- /dev/null +++ b/test/ken/modconst.go @@ -0,0 +1,634 @@ +// 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 integer modulus by constants. + +package main + +import "math/rand" + +const Count = 1e5 + +func i64rand() int64 { + for { + a := int64(rand.Uint32()) + a = (a << 32) | int64(rand.Uint32()) + a >>= uint(rand.Intn(64)) + if -a != a { + return a + } + } + return 0 // impossible +} + +func i64test(a, b, c int64) { + d := a % c + if d != b { + println("i64", a, b, c, d) + panic("fail") + } +} + +func i64run() { + var a, b int64 + + for i := 0; i < Count; i++ { + a = i64rand() + + b = a % 1 + i64test(a, b, 1) + b = a % 2 + i64test(a, b, 2) + b = a % 3 + i64test(a, b, 3) + b = a % 4 + i64test(a, b, 4) + b = a % 5 + i64test(a, b, 5) + b = a % 6 + i64test(a, b, 6) + b = a % 7 + i64test(a, b, 7) + b = a % 8 + i64test(a, b, 8) + b = a % 10 + i64test(a, b, 10) + b = a % 16 + i64test(a, b, 16) + b = a % 20 + i64test(a, b, 20) + b = a % 32 + i64test(a, b, 32) + b = a % 60 + i64test(a, b, 60) + b = a % 64 + i64test(a, b, 64) + b = a % 128 + i64test(a, b, 128) + b = a % 256 + i64test(a, b, 256) + b = a % 16384 + i64test(a, b, 16384) + + b = a % -1 + i64test(a, b, -1) + b = a % -2 + i64test(a, b, -2) + b = a % -3 + i64test(a, b, -3) + b = a % -4 + i64test(a, b, -4) + b = a % -5 + i64test(a, b, -5) + b = a % -6 + i64test(a, b, -6) + b = a % -7 + i64test(a, b, -7) + b = a % -8 + i64test(a, b, -8) + b = a % -10 + i64test(a, b, -10) + b = a % -16 + i64test(a, b, -16) + b = a % -20 + i64test(a, b, -20) + b = a % -32 + i64test(a, b, -32) + b = a % -60 + i64test(a, b, -60) + b = a % -64 + i64test(a, b, -64) + b = a % -128 + i64test(a, b, -128) + b = a % -256 + i64test(a, b, -256) + b = a % -16384 + i64test(a, b, -16384) + } +} + +func u64rand() uint64 { + a := uint64(rand.Uint32()) + a = (a << 32) | uint64(rand.Uint32()) + a >>= uint(rand.Intn(64)) + return a +} + +func u64test(a, b, c uint64) { + d := a % c + if d != b { + println("u64", a, b, c, d) + panic("fail") + } +} + +func u64run() { + var a, b uint64 + + for i := 0; i < Count; i++ { + a = u64rand() + + b = a % 1 + u64test(a, b, 1) + b = a % 2 + u64test(a, b, 2) + b = a % 3 + u64test(a, b, 3) + b = a % 4 + u64test(a, b, 4) + b = a % 5 + u64test(a, b, 5) + b = a % 6 + u64test(a, b, 6) + b = a % 7 + u64test(a, b, 7) + b = a % 8 + u64test(a, b, 8) + b = a % 10 + u64test(a, b, 10) + b = a % 16 + u64test(a, b, 16) + b = a % 20 + u64test(a, b, 20) + b = a % 32 + u64test(a, b, 32) + b = a % 60 + u64test(a, b, 60) + b = a % 64 + u64test(a, b, 64) + b = a % 128 + u64test(a, b, 128) + b = a % 256 + u64test(a, b, 256) + b = a % 16384 + u64test(a, b, 16384) + } +} + +func i32rand() int32 { + for { + a := int32(rand.Uint32()) + a >>= uint(rand.Intn(32)) + if -a != a { + return a + } + } + return 0 // impossible +} + +func i32test(a, b, c int32) { + d := a % c + if d != b { + println("i32", a, b, c, d) + panic("fail") + } +} + +func i32run() { + var a, b int32 + + for i := 0; i < Count; i++ { + a = i32rand() + + b = a % 1 + i32test(a, b, 1) + b = a % 2 + i32test(a, b, 2) + b = a % 3 + i32test(a, b, 3) + b = a % 4 + i32test(a, b, 4) + b = a % 5 + i32test(a, b, 5) + b = a % 6 + i32test(a, b, 6) + b = a % 7 + i32test(a, b, 7) + b = a % 8 + i32test(a, b, 8) + b = a % 10 + i32test(a, b, 10) + b = a % 16 + i32test(a, b, 16) + b = a % 20 + i32test(a, b, 20) + b = a % 32 + i32test(a, b, 32) + b = a % 60 + i32test(a, b, 60) + b = a % 64 + i32test(a, b, 64) + b = a % 128 + i32test(a, b, 128) + b = a % 256 + i32test(a, b, 256) + b = a % 16384 + i32test(a, b, 16384) + + b = a % -1 + i32test(a, b, -1) + b = a % -2 + i32test(a, b, -2) + b = a % -3 + i32test(a, b, -3) + b = a % -4 + i32test(a, b, -4) + b = a % -5 + i32test(a, b, -5) + b = a % -6 + i32test(a, b, -6) + b = a % -7 + i32test(a, b, -7) + b = a % -8 + i32test(a, b, -8) + b = a % -10 + i32test(a, b, -10) + b = a % -16 + i32test(a, b, -16) + b = a % -20 + i32test(a, b, -20) + b = a % -32 + i32test(a, b, -32) + b = a % -60 + i32test(a, b, -60) + b = a % -64 + i32test(a, b, -64) + b = a % -128 + i32test(a, b, -128) + b = a % -256 + i32test(a, b, -256) + } +} + +func u32rand() uint32 { + a := uint32(rand.Uint32()) + a >>= uint(rand.Intn(32)) + return a +} + +func u32test(a, b, c uint32) { + d := a % c + if d != b { + println("u32", a, b, c, d) + panic("fail") + } +} + +func u32run() { + var a, b uint32 + + for i := 0; i < Count; i++ { + a = u32rand() + + b = a % 1 + u32test(a, b, 1) + b = a % 2 + u32test(a, b, 2) + b = a % 3 + u32test(a, b, 3) + b = a % 4 + u32test(a, b, 4) + b = a % 5 + u32test(a, b, 5) + b = a % 6 + u32test(a, b, 6) + b = a % 7 + u32test(a, b, 7) + b = a % 8 + u32test(a, b, 8) + b = a % 10 + u32test(a, b, 10) + b = a % 16 + u32test(a, b, 16) + b = a % 20 + u32test(a, b, 20) + b = a % 32 + u32test(a, b, 32) + b = a % 60 + u32test(a, b, 60) + b = a % 64 + u32test(a, b, 64) + b = a % 128 + u32test(a, b, 128) + b = a % 256 + u32test(a, b, 256) + b = a % 16384 + u32test(a, b, 16384) + } +} + +func i16rand() int16 { + for { + a := int16(rand.Uint32()) + a >>= uint(rand.Intn(16)) + if -a != a { + return a + } + } + return 0 // impossible +} + +func i16test(a, b, c int16) { + d := a % c + if d != b { + println("i16", a, b, c, d) + panic("fail") + } +} + +func i16run() { + var a, b int16 + + for i := 0; i < Count; i++ { + a = i16rand() + + b = a % 1 + i16test(a, b, 1) + b = a % 2 + i16test(a, b, 2) + b = a % 3 + i16test(a, b, 3) + b = a % 4 + i16test(a, b, 4) + b = a % 5 + i16test(a, b, 5) + b = a % 6 + i16test(a, b, 6) + b = a % 7 + i16test(a, b, 7) + b = a % 8 + i16test(a, b, 8) + b = a % 10 + i16test(a, b, 10) + b = a % 16 + i16test(a, b, 16) + b = a % 20 + i16test(a, b, 20) + b = a % 32 + i16test(a, b, 32) + b = a % 60 + i16test(a, b, 60) + b = a % 64 + i16test(a, b, 64) + b = a % 128 + i16test(a, b, 128) + b = a % 256 + i16test(a, b, 256) + b = a % 16384 + i16test(a, b, 16384) + + b = a % -1 + i16test(a, b, -1) + b = a % -2 + i16test(a, b, -2) + b = a % -3 + i16test(a, b, -3) + b = a % -4 + i16test(a, b, -4) + b = a % -5 + i16test(a, b, -5) + b = a % -6 + i16test(a, b, -6) + b = a % -7 + i16test(a, b, -7) + b = a % -8 + i16test(a, b, -8) + b = a % -10 + i16test(a, b, -10) + b = a % -16 + i16test(a, b, -16) + b = a % -20 + i16test(a, b, -20) + b = a % -32 + i16test(a, b, -32) + b = a % -60 + i16test(a, b, -60) + b = a % -64 + i16test(a, b, -64) + b = a % -128 + i16test(a, b, -128) + b = a % -256 + i16test(a, b, -256) + b = a % -16384 + i16test(a, b, -16384) + } +} + +func u16rand() uint16 { + a := uint16(rand.Uint32()) + a >>= uint(rand.Intn(16)) + return a +} + +func u16test(a, b, c uint16) { + d := a % c + if d != b { + println("u16", a, b, c, d) + panic("fail") + } +} + +func u16run() { + var a, b uint16 + + for i := 0; i < Count; i++ { + a = u16rand() + + b = a % 1 + u16test(a, b, 1) + b = a % 2 + u16test(a, b, 2) + b = a % 3 + u16test(a, b, 3) + b = a % 4 + u16test(a, b, 4) + b = a % 5 + u16test(a, b, 5) + b = a % 6 + u16test(a, b, 6) + b = a % 7 + u16test(a, b, 7) + b = a % 8 + u16test(a, b, 8) + b = a % 10 + u16test(a, b, 10) + b = a % 16 + u16test(a, b, 16) + b = a % 20 + u16test(a, b, 20) + b = a % 32 + u16test(a, b, 32) + b = a % 60 + u16test(a, b, 60) + b = a % 64 + u16test(a, b, 64) + b = a % 128 + u16test(a, b, 128) + b = a % 256 + u16test(a, b, 256) + b = a % 16384 + u16test(a, b, 16384) + } +} + +func i8rand() int8 { + for { + a := int8(rand.Uint32()) + a >>= uint(rand.Intn(8)) + if -a != a { + return a + } + } + return 0 // impossible +} + +func i8test(a, b, c int8) { + d := a % c + if d != b { + println("i8", a, b, c, d) + panic("fail") + } +} + +func i8run() { + var a, b int8 + + for i := 0; i < Count; i++ { + a = i8rand() + + b = a % 1 + i8test(a, b, 1) + b = a % 2 + i8test(a, b, 2) + b = a % 3 + i8test(a, b, 3) + b = a % 4 + i8test(a, b, 4) + b = a % 5 + i8test(a, b, 5) + b = a % 6 + i8test(a, b, 6) + b = a % 7 + i8test(a, b, 7) + b = a % 8 + i8test(a, b, 8) + b = a % 10 + i8test(a, b, 10) + b = a % 8 + i8test(a, b, 8) + b = a % 20 + i8test(a, b, 20) + b = a % 32 + i8test(a, b, 32) + b = a % 60 + i8test(a, b, 60) + b = a % 64 + i8test(a, b, 64) + b = a % 127 + i8test(a, b, 127) + + b = a % -1 + i8test(a, b, -1) + b = a % -2 + i8test(a, b, -2) + b = a % -3 + i8test(a, b, -3) + b = a % -4 + i8test(a, b, -4) + b = a % -5 + i8test(a, b, -5) + b = a % -6 + i8test(a, b, -6) + b = a % -7 + i8test(a, b, -7) + b = a % -8 + i8test(a, b, -8) + b = a % -10 + i8test(a, b, -10) + b = a % -8 + i8test(a, b, -8) + b = a % -20 + i8test(a, b, -20) + b = a % -32 + i8test(a, b, -32) + b = a % -60 + i8test(a, b, -60) + b = a % -64 + i8test(a, b, -64) + b = a % -128 + i8test(a, b, -128) + b = a % -101 + i8test(a, b, -101) + } +} + +func u8rand() uint8 { + a := uint8(rand.Uint32()) + a >>= uint(rand.Intn(8)) + return a +} + +func u8test(a, b, c uint8) { + d := a % c + if d != b { + println("u8", a, b, c, d) + panic("fail") + } +} + +func u8run() { + var a, b uint8 + + for i := 0; i < Count; i++ { + a = u8rand() + + b = a % 1 + u8test(a, b, 1) + b = a % 2 + u8test(a, b, 2) + b = a % 3 + u8test(a, b, 3) + b = a % 4 + u8test(a, b, 4) + b = a % 5 + u8test(a, b, 5) + b = a % 6 + u8test(a, b, 6) + b = a % 7 + u8test(a, b, 7) + b = a % 8 + u8test(a, b, 8) + b = a % 10 + u8test(a, b, 10) + b = a % 8 + u8test(a, b, 8) + b = a % 20 + u8test(a, b, 20) + b = a % 32 + u8test(a, b, 32) + b = a % 60 + u8test(a, b, 60) + b = a % 64 + u8test(a, b, 64) + b = a % 127 + u8test(a, b, 127) + } +} + +func main() { + xtest() + i64run() + u64run() + i32run() + u32run() + i16run() + u16run() + i8run() + u8run() +} + +func xtest() { +} |