OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

(__udiv_w_sdiv): Replace hard-coded constants 31 with (SI_TYPE_SIZE - 1). 

From-SVN: r3146
This commit is contained in:
Torbjorn Granlund 1993-01-07 21:46:47 +00:00
parent 1d01c1768e
commit 7bc7d45a25
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
gcc/libgcc2.c
View File

@ -284,7 +284,7 @@ __udiv_w_sdiv (rp, a1, a0, d)
if ((SItype) d >= 0)
{
if (a1 < d - a1 - (a0 >> 31))
if (a1 < d - a1 - (a0 >> (SI_TYPE_SIZE - 1)))
{
/* dividend, divisor, and quotient are nonnegative */
sdiv_qrnnd (q, r, a1, a0, d);
@ -292,18 +292,18 @@ __udiv_w_sdiv (rp, a1, a0, d)
else
{
/* Compute c1*2^32 + c0 = a1*2^32 + a0 - 2^31*d */
sub_ddmmss (c1, c0, a1, a0, d >> 1, d << 31);
sub_ddmmss (c1, c0, a1, a0, d >> 1, d << (SI_TYPE_SIZE - 1));
/* Divide (c1*2^32 + c0) by d */
sdiv_qrnnd (q, r, c1, c0, d);
/* Add 2^31 to quotient */
q += (USItype) 1 << 31;
q += (USItype) 1 << (SI_TYPE_SIZE - 1);
}
}
else
{
b1 = d >> 1; /* d/2, between 2^30 and 2^31 - 1 */
c1 = a1 >> 1; /* A/2 */
c0 = (a1 << 31) + (a0 >> 1);
c0 = (a1 << (SI_TYPE_SIZE - 1)) + (a0 >> 1);
if (a1 < b1) /* A < 2^32*b1, so A/2 < 2^31*b1 */
{