diff options
Diffstat (limited to 'src/pkg/strconv/ftoa_test.go')
-rw-r--r-- | src/pkg/strconv/ftoa_test.go | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/src/pkg/strconv/ftoa_test.go b/src/pkg/strconv/ftoa_test.go deleted file mode 100644 index 6d361a138..000000000 --- a/src/pkg/strconv/ftoa_test.go +++ /dev/null @@ -1,150 +0,0 @@ -// 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 strconv_test - -import ( - "math" - . "strconv" - "testing" -) - -type ftoaTest struct { - f float64 - fmt byte - prec int - s string -} - -func fdiv(a, b float64) float64 { return a / b } // keep compiler in the dark - -const ( - below1e23 = 99999999999999974834176 - above1e23 = 100000000000000008388608 -) - -var ftoatests = []ftoaTest{ - {1, 'e', 5, "1.00000e+00"}, - {1, 'f', 5, "1.00000"}, - {1, 'g', 5, "1"}, - {1, 'g', -1, "1"}, - {20, 'g', -1, "20"}, - {1234567.8, 'g', -1, "1.2345678e+06"}, - {200000, 'g', -1, "200000"}, - {2000000, 'g', -1, "2e+06"}, - - // g conversion and zero suppression - {400, 'g', 2, "4e+02"}, - {40, 'g', 2, "40"}, - {4, 'g', 2, "4"}, - {.4, 'g', 2, "0.4"}, - {.04, 'g', 2, "0.04"}, - {.004, 'g', 2, "0.004"}, - {.0004, 'g', 2, "0.0004"}, - {.00004, 'g', 2, "4e-05"}, - {.000004, 'g', 2, "4e-06"}, - - {0, 'e', 5, "0.00000e+00"}, - {0, 'f', 5, "0.00000"}, - {0, 'g', 5, "0"}, - {0, 'g', -1, "0"}, - - {-1, 'e', 5, "-1.00000e+00"}, - {-1, 'f', 5, "-1.00000"}, - {-1, 'g', 5, "-1"}, - {-1, 'g', -1, "-1"}, - - {12, 'e', 5, "1.20000e+01"}, - {12, 'f', 5, "12.00000"}, - {12, 'g', 5, "12"}, - {12, 'g', -1, "12"}, - - {123456700, 'e', 5, "1.23457e+08"}, - {123456700, 'f', 5, "123456700.00000"}, - {123456700, 'g', 5, "1.2346e+08"}, - {123456700, 'g', -1, "1.234567e+08"}, - - {1.2345e6, 'e', 5, "1.23450e+06"}, - {1.2345e6, 'f', 5, "1234500.00000"}, - {1.2345e6, 'g', 5, "1.2345e+06"}, - - {1e23, 'e', 17, "9.99999999999999916e+22"}, - {1e23, 'f', 17, "99999999999999991611392.00000000000000000"}, - {1e23, 'g', 17, "9.9999999999999992e+22"}, - - {1e23, 'e', -1, "1e+23"}, - {1e23, 'f', -1, "100000000000000000000000"}, - {1e23, 'g', -1, "1e+23"}, - - {below1e23, 'e', 17, "9.99999999999999748e+22"}, - {below1e23, 'f', 17, "99999999999999974834176.00000000000000000"}, - {below1e23, 'g', 17, "9.9999999999999975e+22"}, - - {below1e23, 'e', -1, "9.999999999999997e+22"}, - {below1e23, 'f', -1, "99999999999999970000000"}, - {below1e23, 'g', -1, "9.999999999999997e+22"}, - - {above1e23, 'e', 17, "1.00000000000000008e+23"}, - {above1e23, 'f', 17, "100000000000000008388608.00000000000000000"}, - {above1e23, 'g', 17, "1.0000000000000001e+23"}, - - {above1e23, 'e', -1, "1.0000000000000001e+23"}, - {above1e23, 'f', -1, "100000000000000010000000"}, - {above1e23, 'g', -1, "1.0000000000000001e+23"}, - - {fdiv(5e-304, 1e20), 'g', -1, "5e-324"}, - {fdiv(-5e-304, 1e20), 'g', -1, "-5e-324"}, - - {32, 'g', -1, "32"}, - {32, 'g', 0, "3e+01"}, - - {100, 'x', -1, "%x"}, - - {math.NaN(), 'g', -1, "NaN"}, - {-math.NaN(), 'g', -1, "NaN"}, - {math.Inf(0), 'g', -1, "+Inf"}, - {math.Inf(-1), 'g', -1, "-Inf"}, - {-math.Inf(0), 'g', -1, "-Inf"}, - - {-1, 'b', -1, "-4503599627370496p-52"}, - - // fixed bugs - {0.9, 'f', 1, "0.9"}, - {0.09, 'f', 1, "0.1"}, - {0.0999, 'f', 1, "0.1"}, - {0.05, 'f', 1, "0.1"}, - {0.05, 'f', 0, "0"}, - {0.5, 'f', 1, "0.5"}, - {0.5, 'f', 0, "0"}, - {1.5, 'f', 0, "2"}, - - // http://www.exploringbinary.com/java-hangs-when-converting-2-2250738585072012e-308/ - {2.2250738585072012e-308, 'g', -1, "2.2250738585072014e-308"}, - // http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/ - {2.2250738585072011e-308, 'g', -1, "2.225073858507201e-308"}, -} - -func TestFtoa(t *testing.T) { - for i := 0; i < len(ftoatests); i++ { - test := &ftoatests[i] - s := Ftoa64(test.f, test.fmt, test.prec) - if s != test.s { - t.Error("test", test.f, string(test.fmt), test.prec, "want", test.s, "got", s) - } - s = FtoaN(test.f, test.fmt, test.prec, 64) - if s != test.s { - t.Error("testN=64", test.f, string(test.fmt), test.prec, "want", test.s, "got", s) - } - if float64(float32(test.f)) == test.f && test.fmt != 'b' { - s := Ftoa32(float32(test.f), test.fmt, test.prec) - if s != test.s { - t.Error("test32", test.f, string(test.fmt), test.prec, "want", test.s, "got", s) - } - s = FtoaN(test.f, test.fmt, test.prec, 32) - if s != test.s { - t.Error("testN=32", test.f, string(test.fmt), test.prec, "want", test.s, "got", s) - } - } - } -} |