Subversion Repositories dblclockfft

#include "Vshiftaddmpy.h"
#include "verilated.h"
 
class	MPYTB {
public:
	Vshiftaddmpy	*mpy;
	long	vals[32];
	int	m_addr;
 
	MPYTB(void) {
		mpy = new Vshiftaddmpy;
 
		for(int i=0; i<32; i++)
			vals[i] = 0;
		m_addr = 0;
	}
	~MPYTB(void) {
		delete mpy;
	}
 
	void	tick(void) {
		mpy->i_clk = 0;
		mpy->eval();
		mpy->i_clk = 1;
		mpy->eval();
	}
 
	void	reset(void) {
		mpy->i_clk = 0;
		mpy->i_ce = 1;
		mpy->i_a = 0;
		mpy->i_b = 0;
 
		for(int k=0; k<20; k++)
			tick();
	}
 
	bool	test(const int ia, const int ib) {
		bool	success;
		int	a, b;
		long	out;
 
		a = ia & 0x0ffff;
		b = ib & 0x0ffff;
		mpy->i_ce = 1;
		mpy->i_a = a & 0x0ffff;
		mpy->i_b = b & 0x0ffff;
 
		if (a&0x8000) a |= (-1 << 15);
		if (b&0x8000) b |= (-1 << 15);
 
		vals[m_addr&31] = (long)a * (long)b;
 
		tick();
 
		printf("k=%3d: A =%06x, B =%06x, ANS =%10lx, S=%3d,%3d,%3d,%3d, O = %8x\n",
			m_addr, a & 0x0ffffff, b & 0x0ffffff,
			vals[m_addr&31] & (~(-1l<<40)),
			mpy->v__DOT__sgn,
			mpy->v__DOT__r_s[0],
			mpy->v__DOT__r_s[1],
			mpy->v__DOT__r_s[2],
			mpy->o_r);
 
		out = mpy->o_r;
		if (out & (1<<31)) out |= (-1 << 31);
 
		m_addr++;
 
		success = (m_addr < 20)||(out == vals[(m_addr-18)&31]);
		if (!success) {
			fprintf(stderr, "WRONG ANSWER: %8lx != %8lx\n", vals[(m_addr-18)&0x01f], out);
			exit(-1);
		}
 
		return success;
	}
};
 
int	main(int argc, char **argv, char **envp) {
	Verilated::commandArgs(argc, argv);
	MPYTB		*tb = new MPYTB;
 
	tb->reset();
 
	for(int k=0; k<15; k++) {
		int	a, b;
 
		a = (1<<k);
		b = 1;
		tb->test(a, b);
	}
 
	for(int k=0; k<15; k++) {
		int	a, b, out;
 
		a = (1<<15);
		b = (1<<k);
		tb->test(a, b);
	}
 
	for(int k=0; k<200; k++) {
		int	a, b, out;
 
		tb->test(rand(), rand());
	}
 
	delete	tb;
 
	printf("SUCCESS!\n");
	exit(0);
}