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runtime: fix a comment regarding default floating point precision

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The expected precision setting for the x87 on Win32 is 53-bit
but MinGW resets the floating point unit to 64-bit.  Win32
object code generally expects values to be rounded to double,
not double extended, precision.

R=golang-dev, khr
CC=golang-dev
https://golang.org/cl/8175044
This commit is contained in:
Carl Shapiro 2013-04-02 13:45:56 -07:00
parent 751a24e86e
commit 019c8fc625
1 changed files with 1 additions and 1 deletions
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2
src/pkg/runtime/asm_386.s
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@ -108,7 +108,7 @@ TEXT runtime·breakpoint(SB),7,$0
RET
TEXT runtime·asminit(SB),7,$0
// Linux, Windows start the FPU in extended double precision.
// Linux and MinGW start the FPU in extended double precision.
// Other operating systems use double precision.
// Change to double precision to match them,
// and to match other hardware that only has double.