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* fixed exp() for hardfloat on arm.

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git-svn-id: trunk@8013 -
This commit is contained in:
yury 2007-07-10 20:31:47 +00:00
parent 58992a5ef2
commit 04b640880c
1 changed files with 18 additions and 0 deletions
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18
rtl/inc/genmath.inc
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@ -753,7 +753,11 @@ invalid:
hi:=0.0;
lo:=0.0;
k:=0;
{$ifdef FPC_DOUBLE_HILO_SWAPPED}
hx:=float64(d).low;
{$else}
hx:=float64(d).high;
{$endif FPC_DOUBLE_HILO_SWAPPED}
xsb := (hx shr 31) and 1; { sign bit of d }
hx := hx and $7fffffff; { high word of |d| }
@ -762,7 +766,11 @@ invalid:
begin { if |d|>=709.78... }
if hx >= $7ff00000 then
begin
{$ifdef FPC_DOUBLE_HILO_SWAPPED}
lx:=float64(d).high;
{$else}
lx:=float64(d).low;
{$endif FPC_DOUBLE_HILO_SWAPPED}
if ((hx and $fffff) or lx)<>0 then
begin
result:=d+d; { NaN }
@ -829,14 +837,24 @@ invalid:
if k >= -1021 then
begin
{$ifdef FPC_DOUBLE_HILO_SWAPPED}
hy:=float64(y).low;
float64(y).low:=longint(hy)+(k shl 20); { add k to y's exponent }
{$else}
hy:=float64(y).high;
float64(y).high:=longint(hy)+(k shl 20); { add k to y's exponent }
{$endif FPC_DOUBLE_HILO_SWAPPED}
result:=y;
end
else
begin
{$ifdef FPC_DOUBLE_HILO_SWAPPED}
hy:=float64(y).low;
float64(y).low:=longint(hy)+((k+1000) shl 20); { add k to y's exponent }
{$else}
hy:=float64(y).high;
float64(y).high:=longint(hy)+((k+1000) shl 20); { add k to y's exponent }
{$endif FPC_DOUBLE_HILO_SWAPPED}
result:=y*twom1000;
end;
end;