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| author | Robert Griesemer <gri@golang.org> | 2015-05-22 13:58:03 -0700 |
|---|---|---|
| committer | Robert Griesemer <gri@golang.org> | 2015-05-22 23:12:51 +0000 |
| commit | 2df1ccdbc6aac9e570e985437d741d723cb3497c (patch) | |
| tree | d502df4099b123bcfbdfef51a11d4fe774dae984 /src/math/big/float_test.go | |
| parent | 22e4b8167f14bdd33738cfdc21c3396b2341f8fd (diff) | |
| download | go-2df1ccdbc6aac9e570e985437d741d723cb3497c.tar.xz | |
math/big: Always print exponent sign when using 'p' exponent for Floats.
Float.Format supports the 'b' and 'p' format, both of which print
a binary ('p') exponent. The 'b' format always printed a sign ('+'
or '-') for the exponent; the 'p' format only printed a negative
sign for the exponent. This change makes the two consistent. It
also makes the 'p' format easier to read if the exponent is >= 0.
Also:
- Comments added elsewhere.
Change-Id: Ifd2e01bdafb3043345972ca22a90248d055bd29b
Reviewed-on: https://go-review.googlesource.com/10359
Reviewed-by: Alan Donovan <adonovan@google.com>
Diffstat (limited to 'src/math/big/float_test.go')
| -rw-r--r-- | src/math/big/float_test.go | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/src/math/big/float_test.go b/src/math/big/float_test.go index 8bd3a9c8c9..7df9fc74bc 100644 --- a/src/math/big/float_test.go +++ b/src/math/big/float_test.go @@ -1563,32 +1563,32 @@ func TestFloatArithmeticOverflow(t *testing.T) { x, y, want string acc Accuracy }{ - {4, ToNearestEven, '+', "0", "0", "0", Exact}, // smoke test - {4, ToNearestEven, '+', "0x.8p0", "0x.8p0", "0x.8p1", Exact}, // smoke test + {4, ToNearestEven, '+', "0", "0", "0", Exact}, // smoke test + {4, ToNearestEven, '+', "0x.8p+0", "0x.8p+0", "0x.8p+1", Exact}, // smoke test - {4, ToNearestEven, '+', "0", "0x.8p2147483647", "0x.8p2147483647", Exact}, - {4, ToNearestEven, '+', "0x.8p2147483500", "0x.8p2147483647", "0x.8p2147483647", Below}, // rounded to zero - {4, ToNearestEven, '+', "0x.8p2147483647", "0x.8p2147483647", "+Inf", Above}, // exponent overflow in + - {4, ToNearestEven, '+', "-0x.8p2147483647", "-0x.8p2147483647", "-Inf", Below}, // exponent overflow in + - {4, ToNearestEven, '-', "-0x.8p2147483647", "0x.8p2147483647", "-Inf", Below}, // exponent overflow in - + {4, ToNearestEven, '+', "0", "0x.8p2147483647", "0x.8p+2147483647", Exact}, + {4, ToNearestEven, '+', "0x.8p2147483500", "0x.8p2147483647", "0x.8p+2147483647", Below}, // rounded to zero + {4, ToNearestEven, '+', "0x.8p2147483647", "0x.8p2147483647", "+Inf", Above}, // exponent overflow in + + {4, ToNearestEven, '+', "-0x.8p2147483647", "-0x.8p2147483647", "-Inf", Below}, // exponent overflow in + + {4, ToNearestEven, '-', "-0x.8p2147483647", "0x.8p2147483647", "-Inf", Below}, // exponent overflow in - - {4, ToZero, '+', "0x.fp2147483647", "0x.8p2147483643", "0x.fp2147483647", Below}, // rounded to zero - {4, ToNearestEven, '+', "0x.fp2147483647", "0x.8p2147483643", "+Inf", Above}, // exponent overflow in rounding - {4, AwayFromZero, '+', "0x.fp2147483647", "0x.8p2147483643", "+Inf", Above}, // exponent overflow in rounding + {4, ToZero, '+', "0x.fp2147483647", "0x.8p2147483643", "0x.fp+2147483647", Below}, // rounded to zero + {4, ToNearestEven, '+', "0x.fp2147483647", "0x.8p2147483643", "+Inf", Above}, // exponent overflow in rounding + {4, AwayFromZero, '+', "0x.fp2147483647", "0x.8p2147483643", "+Inf", Above}, // exponent overflow in rounding - {4, AwayFromZero, '-', "-0x.fp2147483647", "0x.8p2147483644", "-Inf", Below}, // exponent overflow in rounding - {4, ToNearestEven, '-', "-0x.fp2147483647", "0x.8p2147483643", "-Inf", Below}, // exponent overflow in rounding - {4, ToZero, '-', "-0x.fp2147483647", "0x.8p2147483643", "-0x.fp2147483647", Above}, // rounded to zero + {4, AwayFromZero, '-', "-0x.fp2147483647", "0x.8p2147483644", "-Inf", Below}, // exponent overflow in rounding + {4, ToNearestEven, '-', "-0x.fp2147483647", "0x.8p2147483643", "-Inf", Below}, // exponent overflow in rounding + {4, ToZero, '-', "-0x.fp2147483647", "0x.8p2147483643", "-0x.fp+2147483647", Above}, // rounded to zero {4, ToNearestEven, '+', "0", "0x.8p-2147483648", "0x.8p-2147483648", Exact}, {4, ToNearestEven, '+', "0x.8p-2147483648", "0x.8p-2147483648", "0x.8p-2147483647", Exact}, - {4, ToNearestEven, '*', "1", "0x.8p2147483647", "0x.8p2147483647", Exact}, + {4, ToNearestEven, '*', "1", "0x.8p2147483647", "0x.8p+2147483647", Exact}, {4, ToNearestEven, '*', "2", "0x.8p2147483647", "+Inf", Above}, // exponent overflow in * {4, ToNearestEven, '*', "-2", "0x.8p2147483647", "-Inf", Below}, // exponent overflow in * {4, ToNearestEven, '/', "0.5", "0x.8p2147483647", "0x.8p-2147483646", Exact}, - {4, ToNearestEven, '/', "0x.8p0", "0x.8p2147483647", "0x.8p-2147483646", Exact}, + {4, ToNearestEven, '/', "0x.8p+0", "0x.8p2147483647", "0x.8p-2147483646", Exact}, {4, ToNearestEven, '/', "0x.8p-1", "0x.8p2147483647", "0x.8p-2147483647", Exact}, {4, ToNearestEven, '/', "0x.8p-2", "0x.8p2147483647", "0x.8p-2147483648", Exact}, {4, ToNearestEven, '/', "0x.8p-3", "0x.8p2147483647", "0", Below}, // exponent underflow in / |