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Math functions helper for CONFIG_SOFTFLOAT=yes 

The patch below adds isfinite() and isnormal() functions which can
work with float64 type, used when CONFIG_SOFTFLOAT=yes.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4048 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-03-13 19:20:00 +00:00
parent 0ca9d3807c
commit 80621676af
1 changed files with 21 additions and 0 deletions
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21
target-ppc/op_helper.c
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@ -492,6 +492,27 @@ static always_inline int isinfinity (float64 d)
(u.ll & 0x000FFFFFFFFFFFFFULL) == 0;
}
#ifdef CONFIG_SOFTFLOAT
static always_inline int isfinite (float64 d)
{
CPU_DoubleU u;
u.d = d;
return (((u.ll >> 52) & 0x7FF) != 0x7FF);
}
static always_inline int isnormal (float64 d)
{
CPU_DoubleU u;
u.d = d;
uint32_t exp = (u.ll >> 52) & 0x7FF;
return ((0 < exp) && (exp < 0x7FF));
}
#endif
void do_compute_fprf (int set_fprf)
{
int isneg;