* Implements a terrible and hacky interface to use a virtual FPU to do floating point operations
*/
+#include <bitset>
+
namespace VFPU
{
- extern int Start(); // Starts the VFPU
+ extern int Start(const char * vcd_output = NULL); // Starts the VFPU
extern int Halt(); // Halts the VFPU
/**
-- 111 = unused
*/
typedef enum {ADD=0x000, SUB=0x001, MULT=0x010, DIV=0x011, SQRT=0x100} Opcode;
- typedef float Register;
+ typedef enum {EVEN=0x00, ZERO=0x01, UP=0x10, DOWN=0x11} Rmode;
+ typedef std::bitset<32> Register;
- extern Register Exec(const Register & a, const Register & b, Opcode op);
-
+ extern Register Exec(const Register & a, const Register & b, Opcode op, Rmode rmode = EVEN); // operate with registers
+ extern float Exec(float a, float b, Opcode op, Rmode rmode = EVEN); //converts floats into registers and back
}
#endif //_VFPU_H