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-rw-r--r--libdimension/tests/polynomial.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/libdimension/tests/polynomial.c b/libdimension/tests/polynomial.c
index cc1d08e..492c22c 100644
--- a/libdimension/tests/polynomial.c
+++ b/libdimension/tests/polynomial.c
@@ -1,5 +1,5 @@
/*************************************************************************
- * Copyright (C) 2010-2012 Tavian Barnes <tavianator@tavianator.com> *
+ * Copyright (C) 2010-2014 Tavian Barnes <tavianator@tavianator.com> *
* *
* This file is part of The Dimension Test Suite. *
* *
@@ -31,7 +31,7 @@
static void
dmnsn_assert_roots(const double poly[], size_t degree, size_t nroots_ex, ...)
{
- double roots[degree - 1];
+ double roots[degree];
size_t nroots = dmnsn_polynomial_solve(poly, degree, roots);
ck_assert_int_eq(nroots, nroots_ex);
@@ -41,18 +41,19 @@ dmnsn_assert_roots(const double poly[], size_t degree, size_t nroots_ex, ...)
double root_ex = va_arg(ap, double);
bool found = false;
for (size_t j = 0; j < nroots; ++j) {
- if (fabs(root_ex - roots[j]) >= dmnsn_epsilon) {
+ double root = roots[j];
+ if (fabs(root_ex - root) >= dmnsn_epsilon) {
continue;
}
- found = true;
- double evroot = dmnsn_polynomial_evaluate(poly, degree, roots[j]);
+ double evroot = dmnsn_polynomial_evaluate(poly, degree, root);
ck_assert(fabs(evroot) < DMNSN_CLOSE_ENOUGH);
- double evmin = dmnsn_polynomial_evaluate(poly, degree, roots[j] - dmnsn_epsilon);
- double evmax = dmnsn_polynomial_evaluate(poly, degree, roots[j] + dmnsn_epsilon);
+ double evmin = dmnsn_polynomial_evaluate(poly, degree, root - dmnsn_epsilon);
+ double evmax = dmnsn_polynomial_evaluate(poly, degree, root + dmnsn_epsilon);
ck_assert(fabs(evroot) <= fabs(evmin) && fabs(evroot) <= fabs(evmax));
+ found = true;
break;
}
@@ -60,6 +61,7 @@ dmnsn_assert_roots(const double poly[], size_t degree, size_t nroots_ex, ...)
for (size_t j = 0; j < nroots; ++j) {
fprintf(stderr, "roots[%zu] == %.17g\n", j, roots[j]);
}
+ fprintf(stderr, "----\n");
ck_abort_msg("Expected root %.17g not found", root_ex);
}
}