[sim] made softfloat files C instead of C++

[riscv-isa-sim.git] / softfloat / ui64_to_f64.c

diff --git a/softfloat/ui64_to_f64.c b/softfloat/ui64_to_f64.c
new file mode 100755 (executable)
index 0000000..52c158b
--- /dev/null
+++ b/softfloat/ui64_to_f64.c
@@ -0,0 +1,25 @@
+\r
+#include <stdint.h>\r
+#include "platform.h"\r
+#include "primitives.h"\r
+#include "internals.h"\r
+#include "softfloat.h"\r
+\r
+float64_t ui64_to_f64( uint_fast64_t a )\r
+{\r
+    union ui64_f64 uZ;\r
+\r
+    if ( ! a ) {\r
+        uZ.ui = 0;\r
+        return uZ.f;\r
+    }\r
+    if ( a & UINT64_C( 0x8000000000000000 ) ) {\r
+        return\r
+            softfloat_roundPackToF64(\r
+                0, 0x43D, softfloat_shortShift64RightJam( a, 1 ) );\r
+    } else {\r
+        return softfloat_normRoundPackToF64( 0, 0x43C, a );\r
+    }\r
+\r
+}\r
+\r