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Robert Griesemer 3663a437a7 [dev.typeparams] go/constant: in ToFloat, convert to rational numbers, not floats
Floating-point constants are represented as rational numbers when
possible (i.e., when numerators and denominators are not too large).
If we convert to floats when not necessary, we risk losing precision.

This is the minimal fix for the specific issue, but it's too aggressive:
If the numbers are too large, we still want to convert to floats.
Will address in a separate CL that also does a few related cleanups.

Fixes #43908.

Change-Id: Id575e34fa18361a347c43701cfb4dd7221997f66
Reviewed-on: https://go-review.googlesource.com/c/go/+/286552
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-01-25 23:44:22 +00:00
.github
api syscall: remove RtlGenRandom and move it into internal/syscall 2021-01-15 18:42:27 +00:00
doc doc/go1.16: mention net/http.Transport.GetProxyConnectHeader 2021-01-22 06:35:43 +00:00
lib/time lib/time, time/tzdata: update tzdata to 2020f 2020-12-30 22:51:30 +00:00
misc misc/cgo/testcarchive: remove special flags for Darwin/ARM 2020-12-30 22:39:59 +00:00
src [dev.typeparams] go/constant: in ToFloat, convert to rational numbers, not floats 2021-01-25 23:44:22 +00:00
test [dev.typeparams] go/constant: in ToFloat, convert to rational numbers, not floats 2021-01-25 23:44:22 +00:00
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