[sim] integrated SoftFloat-3 with ISA sim; removed SoftFloat-2b

[riscv-isa-sim.git] / softfloat / s_countLeadingZeros32.cc

diff --git a/softfloat/s_countLeadingZeros32.cc b/softfloat/s_countLeadingZeros32.cc
new file mode 100755 (executable)
index 0000000..0bd17e1
--- /dev/null
+++ b/softfloat/s_countLeadingZeros32.cc
@@ -0,0 +1,22 @@
+
+#include <stdint.h>
+#include "primitives.h"
+
+int softfloat_countLeadingZeros32( uint32_t a )
+{
+    int count;
+
+    count = 0;
+    if ( a < 0x10000 ) {
+        count = 16;
+        a <<= 16;
+    }
+    if ( a < 0x1000000 ) {
+        count += 8;
+        a <<= 8;
+    }
+    count += softfloat_countLeadingZeros8[ a>>24 ];
+    return count;
+
+}
+