Changes in uspace/lib/softint/generic/multiplication.c [a35b458:2467b41] in mainline

File:

• uspace/lib/softint/generic/multiplication.c (modified) (3 diffs)

uspace/lib/softint/generic/multiplication.c

@@ -53 +53 @@
         unsigned int b1 = b >> 16;
         unsigned int b2 = b & UINT16_MAX;
-
+        
         unsigned long long t1 = a1 * b1;
         unsigned long long t2 = a1 * b2;
         t2 += a2 * b1;
         unsigned long long t3 = a2 * b2;
-
+        
         t3 = (((t1 << 16) + t2) << 16) + t3;
-
+        
         return t3;
 }
@@ -70 +70 @@
 {
         char neg = 0;
-
+        
         if (a < 0) {
                 neg = !neg;
                 a = -a;
         }
-
+        
         if (b < 0) {
                 neg = !neg;
                 b = -b;
         }
-
+        
         unsigned long long a1 = a >> 32;
         unsigned long long b1 = b >> 32;
-
+        
         unsigned long long a2 = a & (UINT32_MAX);
         unsigned long long b2 = b & (UINT32_MAX);
-
+        
         if (SOFTINT_CHECK_OF && (a1 != 0) && (b1 != 0)) {
                 /* Error (overflow) */
                 return (neg ? INT64_MIN : INT64_MAX);
         }
-
+        
         /* (if OF checked) a1 or b1 is zero => result fits in 64 bits,
          * no need to another overflow check
          */
         unsigned long long t1 = mul(a1, b2) + mul(b1, a2);
-
+        
         if ((SOFTINT_CHECK_OF) && (t1 > UINT32_MAX)) {
                 /* Error (overflow) */
                 return (neg ? INT64_MIN : INT64_MAX);
         }
-
+        
         t1 = t1 << 32;
         unsigned long long t2 = mul(a2, b2);
         t2 += t1;
-
+        
         /* t2 & (1ull << 63) - if this bit is set in unsigned long long,
          * result does not fit in signed one */
@@ -112 +112 @@
                 return (neg ? INT64_MIN : INT64_MAX);
         }
-
+        
         long long result = t2;
         if (neg)
                 result = -result;
-
+        
         return result;
 }