verilator/test_regress/t/t_tri_gate.cpp

62 lines
1.3 KiB
C++

// -*- 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;
}