Initial commit.

1 files changed, 48 insertions, 0 deletions

diff --git a/ic-reals-6.3/tests/abs_R.c b/ic-reals-6.3/tests/abs_R.c
new file mode 100644
index 0000000..eda26ba
--- /dev/null
+++ b/ic-reals-6.3/tests/abs_R.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include "real.h"
+#include <math.h>
+
+/*
+ * Tests the abs_R when applied to a rational a real expressed
+ * by a sign, a characteristic pair and a vector.
+ */
+main(int argc, char *argv[])
+{
+	Real x, y;
+	double f;
+	Real makeRealSignCNQInt(Sign, char *, int, int, int);
+
+	MyName = argv[0];
+
+	if (argc != 7) {
+		fprintf(stderr, "%s <sign> <c> <n> <a> <b> <ndigits>\n", MyName);
+		exit(1);
+	}
+
+	initReals();
+
+	y = makeRealSignCNQInt(
+				atoi(argv[1]),	/* sign */
+				argv[2],		/* c */
+				atoi(argv[3]), 	/* n */
+				atoi(argv[4]),	/* a */
+				atoi(argv[5]));	/* b */
+
+	print_R_Dec(y, atoi(argv[6]));
+	printf("\n");
+	f = realToDouble(y);
+	printf("x=%f\n",f);
+
+	x = tan_R(y);
+
+	y = abs_R(x);
+
+	printf("tan x=");
+	print_R_Dec(y, atoi(argv[6]));
+	printf("\n");
+
+	printf("abs (tan x)=");
+	print_R(y);
+	printf("\n");
+	printf("tan(x)=%f\n", tan(f));
+}