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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:25:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:25:22 +0000 |
commit | f6ad4dcef54c5ce997a4bad5a6d86de229015700 (patch) | |
tree | 7cfa4e31ace5c2bd95c72b154d15af494b2bcbef /test/float_lit.go | |
parent | Initial commit. (diff) | |
download | golang-1.22-f6ad4dcef54c5ce997a4bad5a6d86de229015700.tar.xz golang-1.22-f6ad4dcef54c5ce997a4bad5a6d86de229015700.zip |
Adding upstream version 1.22.1.upstream/1.22.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | test/float_lit.go | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/test/float_lit.go b/test/float_lit.go new file mode 100644 index 0000000..4efae23 --- /dev/null +++ b/test/float_lit.go @@ -0,0 +1,203 @@ +// 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 floating-point literal syntax. + +package main + +var bad bool + +func pow10(pow int) float64 { + if pow < 0 { + return 1 / pow10(-pow) + } + if pow > 0 { + return pow10(pow-1) * 10 + } + return 1 +} + +func close(da float64, ia, ib int64, pow int) bool { + db := float64(ia) / float64(ib) + db *= pow10(pow) + + if da == 0 || db == 0 { + if da == 0 && db == 0 { + return true + } + return false + } + + de := (da - db) / da + if de < 0 { + de = -de + } + + if de < 1e-14 { + return true + } + if !bad { + println("BUG") + bad = true + } + return false +} + +func main() { + if !close(0., 0, 1, 0) { + print("0. is ", 0., "\n") + } + if !close(+10., 10, 1, 0) { + print("+10. is ", +10., "\n") + } + if !close(-210., -210, 1, 0) { + print("-210. is ", -210., "\n") + } + + if !close(.0, 0, 1, 0) { + print(".0 is ", .0, "\n") + } + if !close(+.01, 1, 100, 0) { + print("+.01 is ", +.01, "\n") + } + if !close(-.012, -12, 1000, 0) { + print("-.012 is ", -.012, "\n") + } + + if !close(0.0, 0, 1, 0) { + print("0.0 is ", 0.0, "\n") + } + if !close(+10.01, 1001, 100, 0) { + print("+10.01 is ", +10.01, "\n") + } + if !close(-210.012, -210012, 1000, 0) { + print("-210.012 is ", -210.012, "\n") + } + + if !close(0E+1, 0, 1, 0) { + print("0E+1 is ", 0E+1, "\n") + } + if !close(+10e2, 10, 1, 2) { + print("+10e2 is ", +10e2, "\n") + } + if !close(-210e3, -210, 1, 3) { + print("-210e3 is ", -210e3, "\n") + } + + if !close(0E-1, 0, 1, 0) { + print("0E-1 is ", 0E-1, "\n") + } + if !close(+0e23, 0, 1, 1) { + print("+0e23 is ", +0e23, "\n") + } + if !close(-0e345, 0, 1, 1) { + print("-0e345 is ", -0e345, "\n") + } + + if !close(0E1, 0, 1, 1) { + print("0E1 is ", 0E1, "\n") + } + if !close(+10e23, 10, 1, 23) { + print("+10e23 is ", +10e23, "\n") + } + if !close(-210e34, -210, 1, 34) { + print("-210e34 is ", -210e34, "\n") + } + + if !close(0.E1, 0, 1, 1) { + print("0.E1 is ", 0.E1, "\n") + } + if !close(+10.e+2, 10, 1, 2) { + print("+10.e+2 is ", +10.e+2, "\n") + } + if !close(-210.e-3, -210, 1, -3) { + print("-210.e-3 is ", -210.e-3, "\n") + } + + if !close(.0E1, 0, 1, 1) { + print(".0E1 is ", .0E1, "\n") + } + if !close(+.01e2, 1, 100, 2) { + print("+.01e2 is ", +.01e2, "\n") + } + if !close(-.012e3, -12, 1000, 3) { + print("-.012e3 is ", -.012e3, "\n") + } + + if !close(0.0E1, 0, 1, 0) { + print("0.0E1 is ", 0.0E1, "\n") + } + if !close(+10.01e2, 1001, 100, 2) { + print("+10.01e2 is ", +10.01e2, "\n") + } + if !close(-210.012e3, -210012, 1000, 3) { + print("-210.012e3 is ", -210.012e3, "\n") + } + + if !close(0.E+12, 0, 1, 0) { + print("0.E+12 is ", 0.E+12, "\n") + } + if !close(+10.e23, 10, 1, 23) { + print("+10.e23 is ", +10.e23, "\n") + } + if !close(-210.e33, -210, 1, 33) { + print("-210.e33 is ", -210.e33, "\n") + } + + if !close(.0E-12, 0, 1, 0) { + print(".0E-12 is ", .0E-12, "\n") + } + if !close(+.01e23, 1, 100, 23) { + print("+.01e23 is ", +.01e23, "\n") + } + if !close(-.012e34, -12, 1000, 34) { + print("-.012e34 is ", -.012e34, "\n") + } + + if !close(0.0E12, 0, 1, 12) { + print("0.0E12 is ", 0.0E12, "\n") + } + if !close(+10.01e23, 1001, 100, 23) { + print("+10.01e23 is ", +10.01e23, "\n") + } + if !close(-210.012e33, -210012, 1000, 33) { + print("-210.012e33 is ", -210.012e33, "\n") + } + + if !close(0.E123, 0, 1, 123) { + print("0.E123 is ", 0.E123, "\n") + } + if !close(+10.e+23, 10, 1, 23) { + print("+10.e+234 is ", +10.e+234, "\n") + } + if !close(-210.e-35, -210, 1, -35) { + print("-210.e-35 is ", -210.e-35, "\n") + } + + if !close(.0E123, 0, 1, 123) { + print(".0E123 is ", .0E123, "\n") + } + if !close(+.01e29, 1, 100, 29) { + print("+.01e29 is ", +.01e29, "\n") + } + if !close(-.012e29, -12, 1000, 29) { + print("-.012e29 is ", -.012e29, "\n") + } + + if !close(0.0E123, 0, 1, 123) { + print("0.0E123 is ", 0.0E123, "\n") + } + if !close(+10.01e31, 1001, 100, 31) { + print("+10.01e31 is ", +10.01e31, "\n") + } + if !close(-210.012e19, -210012, 1000, 19) { + print("-210.012e19 is ", -210.012e19, "\n") + } + + if bad { + panic("float_lit") + } +} |