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

[riscv-isa-sim.git] / softfloat / f64_le.cc

diff --git a/softfloat/f64_le.cc b/softfloat/f64_le.cc
new file mode 100755 (executable)
index 0000000..e6c5caf
--- /dev/null
+++ b/softfloat/f64_le.cc
@@ -0,0 +1,35 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+bool f64_le( float64_t a, float64_t b )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    union ui64_f64 uB;
+    uint_fast64_t uiB;
+    bool signA, signB;
+
+    uA.f = a;
+    uiA = uA.ui;
+    uB.f = b;
+    uiB = uB.ui;
+    if (
+           ( ( expF64UI( uiA ) == 0x7FF ) && fracF64UI( uiA ) )
+        || ( ( expF64UI( uiB ) == 0x7FF ) && fracF64UI( uiB ) )
+    ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return false;
+    }
+    signA = signF64UI( uiA );
+    signB = signF64UI( uiB );
+    return
+        ( signA != signB )
+            ? signA || ! ( ( uiA | uiB ) & UINT64_C( 0x7FFFFFFFFFFFFFFF ) )
+            : ( uiA == uiB ) || ( signA ^ ( uiA < uiB ) );
+
+}
+