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-rw-r--r--softint/mul.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/softint/mul.c b/softint/mul.c
new file mode 100644
index 0000000..45cff00
--- /dev/null
+++ b/softint/mul.c
@@ -0,0 +1,22 @@
+
+#include <stdint.h>
+
+long softint_mul( long x, long y )
+{
+
+ int i;
+ long result = 0;
+
+ for (i = 0; i < sizeof(long); i++) {
+ if ((x & 0x1) == 1)
+ result = result + y;
+
+ x = x >> 1;
+ y = y << 1;
+ }
+
+ return result;
+
+}
+
+