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math/big: fix silly bug in Int64 accessor

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Change-Id: If335d45ea1ab6c8aeeb47515f97680e2c1d651f3
Reviewed-on: https://go-review.googlesource.com/7522
Reviewed-by: Alan Donovan <adonovan@google.com>
This commit is contained in:
Robert Griesemer 2015-03-13 12:59:56 -07:00
parent 3eb84c8908
commit f6580319e4
2 changed files with 3 additions and 1 deletions
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2
src/math/big/float.go
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@ -835,7 +835,7 @@ func (x *Float) Int64() (int64, Accuracy) {
if x.neg { if x.neg {
i = -i i = -i
} }
if x.MinPrec() <= 63 { if x.MinPrec() <= uint(x.exp) {
return i, Exact return i, Exact
} }
return i, acc // x truncated return i, acc // x truncated

2
src/math/big/float_test.go
View file

@ -808,12 +808,14 @@ func TestFloatInt64(t *testing.T) {
{"-12345.000000000000000000001", -12345, Above}, {"-12345.000000000000000000001", -12345, Above},
{"-12345.0", -12345, Exact}, {"-12345.0", -12345, Exact},
{"-1.000000000000000000001", -1, Above}, {"-1.000000000000000000001", -1, Above},
{"-1.5", -1, Above},
{"-1", -1, Exact}, {"-1", -1, Exact},
{"-1e-1000", 0, Above}, {"-1e-1000", 0, Above},
{"0", 0, Exact}, {"0", 0, Exact},
{"1e-1000", 0, Below}, {"1e-1000", 0, Below},
{"1", 1, Exact}, {"1", 1, Exact},
{"1.000000000000000000001", 1, Below}, {"1.000000000000000000001", 1, Below},
{"1.5", 1, Below},
{"12345.0", 12345, Exact}, {"12345.0", 12345, Exact},
{"12345.000000000000000000001", 12345, Below}, {"12345.000000000000000000001", 12345, Below},
{"9223372036854775807", 9223372036854775807, Exact}, {"9223372036854775807", 9223372036854775807, Exact},