int pass(char *su, char *bin)
{
int change;
int i;
int j;
int k;
int sum[4];
change = 0;
k = -1;
while (++k < 9 && (j = -1))
while (++j < 9 && (i = -1))
while (++i < 9)
if (!su[9 * i + j] && bin[81 * i + 9 * j + k])
{
sum[0] = sum_line(bin, i, k);
sum[1] = sum_column(bin, j, k);
sum[2] = sum_untitled(bin, i, j);
sum[3] = sum_square(bin, i, j, k);
if ((sum[0] == 1 || sum[1] == 1 || sum[2] == 1 || sum[3] == 1) &&
++change)
add_sol(su, bin, i, j, k);
}
if (change)
return (1);
return (0);
}
/* >>> start tutorial code >>> */
int main( ){
USING_NAMESPACE_ACADO
int i;
// DEFINE VALRIABLES:
// ---------------------------
Matrix A(3,3);
Vector b(3);
DifferentialState x(3);
DifferentialState y;
Function f[7];
// DEFINE THE VECTOR AND MATRIX ENTRIES:
// -------------------------------------
A.setZero() ;
A(0,0) = 1.0; A(1,1) = 2.0; A(2,2) = 3.0;
b(0) = 1.0; b(1) = 1.0; b(2) = 1.0;
// DEFINE TEST FUNCTIONS:
// -----------------------
f[0] << A*x + b;
f[1] << y + euclidean_norm(A*x + b);
f[2] << y*y;
f[3] << square(y);
f[4] << 5.0*log_sum_exp( x );
// f[5] << entropy( y );
f[6] << -sum_square( x );
for( i = 0; i < 7; i++ ){
if( f[i].isConvex() == BT_TRUE )
printf("f[%d] is convex. \n", i );
else{
if( f[i].isConcave() == BT_TRUE )
printf("f[%d] is concave. \n", i );
else
printf("f[%d] is neither convex nor concave. \n", i );
}
}
return 0;
}