diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/main.c | 117 |
1 files changed, 66 insertions, 51 deletions
diff --git a/test/main.c b/test/main.c index 3551af2..ac7fba3 100644 --- a/test/main.c +++ b/test/main.c @@ -5,72 +5,87 @@ double f(double x) { return (x - 1) / (x + 1); } int main() { - // printf("smaceps(): %.10e\n", smaceps()); - // printf("dmaceps(): %.10e\n", dmaceps()); - // - // Array_double *v = InitArray(double, {3, 1, -4, 1, 5, -9, 3}); - // Array_double *w = InitArray(double, {-2, 7, 1, -8, -2, 8, 5}); - // - // char v_s[256]; - // char w_s[256]; - // format_vector_into(v, v_s); - // format_vector_into(w, w_s); - // - // printf("v: %s\n", v_s); - // printf("w: %s\n", w_s); - // printf("l1_norm(v): %f\n", l1_norm(v)); - // printf("l2_norm(v): %f\n", l2_norm(v)); - // printf("linf_norm(v): %f\n", linf_norm(v)); - // - // printf("l1_dist(v, w): %f\n", l1_distance(v, w)); - // printf("l2_dist(v, w): %f\n", l2_distance(v, w)); - // printf("linf_dist(v, w): %f\n", linf_distance(v, w)); - // - // double h = 0.001; - // printf("approx f'(1) w/ c.d.: %f\n", central_derivative_at(&f, 1, h)); - // printf("approx f'(1) w/ fw.d.: %f\n", forward_derivative_at(&f, 1, h)); - // printf("approx f'(1) w/ bw.d.: %f\n", backward_derivative_at(&f, 1, h)); - // - // v = InitArray(double, {1, 2, 3, 4, 5}); - // w = InitArray(double, {2, 3, 4, 5, 6}); - // format_vector_into(v, v_s); - // format_vector_into(w, w_s); - // printf("v: %s\n", v_s); - // printf("w: %s\n", w_s); - // - // Line *line = least_squares_lin_reg(v, w); - // printf("least_squares_lin_reg(v, w): (%f)x + %f\n", line->m, line->a); - // - // v = InitArray(double, {1, 2, 3, 4, 5, 6, 7}); - // w = InitArray(double, {0.5, 3, 2, 3.5, 5, 6, 7.5}); - // - // format_vector_into(v, v_s); - // format_vector_into(w, w_s); - // printf("v: %s\n", v_s); - // printf("w: %s\n", w_s); - // line = least_squares_lin_reg(v, w); - // printf("least_squares_lin_reg(v, w): (%f)x + %f\n", line->m, line->a); + printf("Basic Routines\n"); + printf("smaceps(): %.10e\n", smaceps()); + printf("dmaceps(): %.10e\n", dmaceps()); + printf("========\n"); + + Array_double *v = InitArray(double, {3, 1, -4, 1, 5, -9, 3}); + char v_s[256]; + strcpy(v_s, ""); + format_vector_into(v, v_s); - char m_s[256]; + Array_double *w = InitArray(double, {-2, 7, 1, -8, -2, 8, 5}); + char w_s[256]; + strcpy(w_s, ""); + format_vector_into(w, w_s); + + printf("Norm, Distance\n"); + printf("v: %s", v_s); + printf("w: %s", w_s); + printf("l1_norm(v): %f\n", l1_norm(v)); + printf("l2_norm(v): %f\n", l2_norm(v)); + printf("linf_norm(v): %f\n", linf_norm(v)); + printf("l1_dist(v, w): %f\n", l1_distance(v, w)); + printf("l2_dist(v, w): %f\n", l2_distance(v, w)); + printf("linf_dist(v, w): %f\n", linf_distance(v, w)); + printf("========\n"); + + double h = 0.001; + printf("Derivative Approxs\n"); + printf("f(x) = (x-1)/(x+1)\n"); + printf("approx f'(1) w/ c.d.: %f\n", central_derivative_at(&f, 1, h)); + printf("approx f'(1) w/ fw.d.: %f\n", forward_derivative_at(&f, 1, h)); + printf("approx f'(1) w/ bw.d.: %f\n", backward_derivative_at(&f, 1, h)); + printf("========\n"); + + v = InitArray(double, {1, 2, 3, 4, 5}); + strcpy(v_s, ""); + format_vector_into(v, v_s); + w = InitArray(double, {2, 3, 4, 5, 6}); + strcpy(w_s, ""); + format_vector_into(w, w_s); + Line *line = least_squares_lin_reg(v, w); + printf("Least Squares\n"); + printf("v: %s", v_s); + printf("w: %s", w_s); + printf("least_squares_lin_reg(v, w): (%f)x + %f\n", line->m, line->a); + v = InitArray(double, {1, 2, 3, 4, 5, 6, 7}); + strcpy(v_s, ""); + format_vector_into(v, v_s); + w = InitArray(double, {0.5, 3, 2, 3.5, 5, 6, 7.5}); + strcpy(w_s, ""); + format_vector_into(w, w_s); + printf("v: %s", v_s); + printf("w: %s", w_s); + line = least_squares_lin_reg(v, w); + printf("least_squares_lin_reg(v, w): (%f)x + %f\n", line->m, line->a); + printf("========\n"); + + + printf("LU Decomp\n"); + char m_s[2048]; Matrix_double *m = InitMatrixWithSize(double, 8, 8, 0.0); - put_identity_diagonal(m); for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { m->data[i]->data[j] = (i + 1.0) + j * 3 + (rand() % 12); } } - format_matrix_into(m, m_s); - printf("%s\n", m_s); + printf("m = %s", m_s); Matrix_double **u_l = put_lu_decomp(m); Matrix_double *u = u_l[0]; Matrix_double *l = u_l[1]; + strcpy(m_s, ""); format_matrix_into(u, m_s); - printf("%s\n", m_s); + printf("u = %s", m_s); + strcpy(m_s, ""); format_matrix_into(l, m_s); - printf("%s\n", m_s); + printf("l = %s", m_s); + printf("========\n"); + printf("Back Substitution\n"); return 0; } |