1 files changed, 30 insertions, 0 deletions
diff --git a/softfloat/s_sub192.c b/softfloat/s_sub192.c
new file mode 100755
index 0000000..96f21c9
--- /dev/null
+++ b/softfloat/s_sub192.c
@@ -0,0 +1,30 @@
+
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+
+struct uint192
+ softfloat_sub192(
+     uint64_t a128,
+     uint64_t a64,
+     uint64_t a0,
+     uint64_t b128,
+     uint64_t b64,
+     uint64_t b0
+ )
+{
+    struct uint192 z;
+    unsigned int borrow64, borrow128;
+
+    z.v0 = a0 - b0;
+    borrow64 = ( a0 < b0 );
+    z.v64 = a64 - b64;
+    borrow128 = ( a64 < b64 );
+    z.v128 = a128 - b128;
+    borrow128 += ( z.v64 < borrow64 );
+    z.v64 -= borrow64;
+    z.v128 -= borrow128;
+    return z;
+
+}
+