This commit is contained in:
Daniel Fischer 2011-09-23 12:18:15 +02:00
commit 9e4117ba61

View File

@ -1009,6 +1009,7 @@ static Bigint *pow5mult(Bigint *b, int k, Stack_alloc *alloc)
Bigint *b1, *p5, *p51=NULL;
int i;
static int p05[3]= { 5, 25, 125 };
my_bool overflow= FALSE;
if ((i= k & 3))
b= multadd(b, p05[i-1], 0, alloc);
@ -1027,16 +1028,19 @@ static Bigint *pow5mult(Bigint *b, int k, Stack_alloc *alloc)
if (!(k>>= 1))
break;
/* Calculate next power of 5 */
if (p5 < p5_a + P5A_MAX)
++p5;
else if (p5 == p5_a + P5A_MAX)
p5= mult(p5, p5, alloc);
else
if (overflow)
{
p51= mult(p5, p5, alloc);
Bfree(p5, alloc);
p5= p51;
}
else if (p5 < p5_a + P5A_MAX)
++p5;
else if (p5 == p5_a + P5A_MAX)
{
p5= mult(p5, p5, alloc);
overflow= TRUE;
}
}
if (p51)
Bfree(p51, alloc);