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int128: Add int128_exts64() 

This adds macro to extend signed 64bit value to signed 128bit value.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alexey Kardashevskiy 2014-05-30 13:00:28 -06:00 committed by Alex Williamson
parent 078c44f48e
commit 12e1129b80
1 changed files with 5 additions and 0 deletions
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5
include/qemu/int128.h
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@ -38,6 +38,11 @@ static inline Int128 int128_2_64(void)
return (Int128) { 0, 1 };
}
static inline Int128 int128_exts64(int64_t a)
{
return (Int128) { .lo = a, .hi = (a < 0) ? -1 : 0 };
}
static inline Int128 int128_and(Int128 a, Int128 b)
{
return (Int128) { a.lo & b.lo, a.hi & b.hi };