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math/big: disable some tests on 32bit platforms (fix build)

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TBR: adonovan

Change-Id: I59757b5b46a2c533fc5f888423c99d550d3c7648
Reviewed-on: https://go-review.googlesource.com/3264
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Robert Griesemer 2015-01-23 21:40:35 -08:00
parent bd275b2381
commit 3acb9fd98e
2 changed files with 30 additions and 4 deletions
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14
src/math/big/float.go
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@ -357,12 +357,18 @@ func nlz(x Word) uint {
return _W - uint(bitLen(x))
}
// TODO(gri) this assumes a Word is 64 bits
func nlz64(x uint64) uint {
if _W != 64 {
panic("size mismatch")
// TODO(gri) this can be done more nicely
if _W == 32 {
if x>>32 == 0 {
return 32 + nlz(Word(x))
}
return nlz(Word(x >> 32))
}
return nlz(Word(x))
if _W == 64 {
return nlz(Word(x))
}
panic("unreachable")
}
// SetUint64 sets z to x and returns z.