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authorDuncan Wilkie <antigravityd@gmail.com>2023-11-18 06:11:09 -0600
committerDuncan Wilkie <antigravityd@gmail.com>2023-11-18 06:11:09 -0600
commit11da511c784eca003deb90c23570f0873954e0de (patch)
treee14fdd3d5d6345956d67e79ae771d0633d28362b /ic-reals-6.3/tests/t2.c
Initial commit.
Diffstat (limited to 'ic-reals-6.3/tests/t2.c')
-rw-r--r--ic-reals-6.3/tests/t2.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/ic-reals-6.3/tests/t2.c b/ic-reals-6.3/tests/t2.c
new file mode 100644
index 0000000..a41eed0
--- /dev/null
+++ b/ic-reals-6.3/tests/t2.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include "real.h"
+#include <math.h>
+
+/*
+ * computes log(exp(x))
+ */
+main(int argc, char *argv[])
+{
+ Real x, y, z;
+ 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 = exp_R(y);
+ x = log_R(x);
+
+ print_R_Dec(x, atoi(argv[6]));
+ printf("\n");
+ printf("t2(x)=%f\n", log(exp(f)));
+}