summaryrefslogtreecommitdiffstats
path: root/compiler-rt/lib/builtins/multi3.c
diff options
context:
space:
mode:
Diffstat (limited to 'compiler-rt/lib/builtins/multi3.c')
-rw-r--r--compiler-rt/lib/builtins/multi3.c57
1 files changed, 26 insertions, 31 deletions
diff --git a/compiler-rt/lib/builtins/multi3.c b/compiler-rt/lib/builtins/multi3.c
index 96c9cf6282e..e214b231e41 100644
--- a/compiler-rt/lib/builtins/multi3.c
+++ b/compiler-rt/lib/builtins/multi3.c
@@ -17,41 +17,36 @@
/* Returns: a * b */
-static
-ti_int
-__mulddi3(du_int a, du_int b)
-{
- twords r;
- const int bits_in_dword_2 = (int)(sizeof(di_int) * CHAR_BIT) / 2;
- const du_int lower_mask = (du_int)~0 >> bits_in_dword_2;
- r.s.low = (a & lower_mask) * (b & lower_mask);
- du_int t = r.s.low >> bits_in_dword_2;
- r.s.low &= lower_mask;
- t += (a >> bits_in_dword_2) * (b & lower_mask);
- r.s.low += (t & lower_mask) << bits_in_dword_2;
- r.s.high = t >> bits_in_dword_2;
- t = r.s.low >> bits_in_dword_2;
- r.s.low &= lower_mask;
- t += (b >> bits_in_dword_2) * (a & lower_mask);
- r.s.low += (t & lower_mask) << bits_in_dword_2;
- r.s.high += t >> bits_in_dword_2;
- r.s.high += (a >> bits_in_dword_2) * (b >> bits_in_dword_2);
- return r.all;
+static ti_int __mulddi3(du_int a, du_int b) {
+ twords r;
+ const int bits_in_dword_2 = (int)(sizeof(di_int) * CHAR_BIT) / 2;
+ const du_int lower_mask = (du_int)~0 >> bits_in_dword_2;
+ r.s.low = (a & lower_mask) * (b & lower_mask);
+ du_int t = r.s.low >> bits_in_dword_2;
+ r.s.low &= lower_mask;
+ t += (a >> bits_in_dword_2) * (b & lower_mask);
+ r.s.low += (t & lower_mask) << bits_in_dword_2;
+ r.s.high = t >> bits_in_dword_2;
+ t = r.s.low >> bits_in_dword_2;
+ r.s.low &= lower_mask;
+ t += (b >> bits_in_dword_2) * (a & lower_mask);
+ r.s.low += (t & lower_mask) << bits_in_dword_2;
+ r.s.high += t >> bits_in_dword_2;
+ r.s.high += (a >> bits_in_dword_2) * (b >> bits_in_dword_2);
+ return r.all;
}
/* Returns: a * b */
-COMPILER_RT_ABI ti_int
-__multi3(ti_int a, ti_int b)
-{
- twords x;
- x.all = a;
- twords y;
- y.all = b;
- twords r;
- r.all = __mulddi3(x.s.low, y.s.low);
- r.s.high += x.s.high * y.s.low + x.s.low * y.s.high;
- return r.all;
+COMPILER_RT_ABI ti_int __multi3(ti_int a, ti_int b) {
+ twords x;
+ x.all = a;
+ twords y;
+ y.all = b;
+ twords r;
+ r.all = __mulddi3(x.s.low, y.s.low);
+ r.s.high += x.s.high * y.s.low + x.s.low * y.s.high;
+ return r.all;
}
#endif /* CRT_HAS_128BIT */
OpenPOWER on IntegriCloud