verilator/test_regress/t/t_tri_gate.cpp

// -*- mode: C++; c-file-style: "cc-mode" -*-
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2008 by Lane Brooks

#include VM_PREFIX_INCLUDE

VM_PREFIX* tb = NULL;

double sc_time_stamp() {
    return 0;
}

bool check() {
    bool pass;
    int c = (tb->A >> tb->SEL) & 0x1;
#ifdef TEST_VERBOSE
    bool verbose = true;
#else
    bool verbose = false;
#endif

    if(tb->W == c && tb->X == c && tb->Y == c && tb->Z == c) {
	pass = true;
	if (verbose) printf("-  pass: ");
    } else {
	pass = false;
	verbose = true;
	printf("%%E-FAIL: ");
    }
    if (verbose) {
	printf("SEL=%d A=%d   got: W=%d X=%d Y=%d Z=%d  exp: WXYZ=%d\n",
	       tb->SEL, tb->A, tb->W, tb->X, tb->Y, tb->Z, c);
    }
    return pass;
}

int main() {
    bool pass = true;

    Verilated::debug(0);
    tb = new VM_PREFIX("tb");

    // loop through every possibility and check the result
    for (tb->SEL=0; tb->SEL<2; tb->SEL++) {
	for (tb->A=0; tb->A<4; tb->A++) {
	    tb->eval();
	    if(!check()) {
		pass =false;
	    }
	}
    }

    if(pass) {
	VL_PRINTF("*-* All Finished *-*\n");
	tb->final();
    } else {
	vl_fatal(__FILE__,__LINE__,"top", "Unexpected results from tristate test\n");
    }
    return 0;
}