add double test (printing is not cool at the moment)

2 files changed, 11 insertions, 1 deletions

diff --git a/test.c b/test.c
index 01a6dd5..5a009fc 100644
--- a/test.c
+++ b/test.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdarg.h>
+#include <float.h>
 
 unsigned int total_passed = 0;
 unsigned int total_failed = 0;
@@ -87,6 +88,12 @@ void test_int_equals_imp(const char *expression, int result, int expected)
 	print_result(result == expected, "%s == %d", expression, expected);
 }
 
+void test_double_imp(const char *expression, double result, double expected)
+{
+	int success = (result - expected < DBL_EPSILON);
+	print_result(success, "%s == %d", expression, (int)expected);
+}
+
 void test_void_imp(const char *expression)
 {
 	putchar('?');
diff --git a/test.h b/test.h
index 357a26c..43d7512 100644
--- a/test.h
+++ b/test.h
@@ -7,6 +7,9 @@ void testing_end(void);
 void test_int_equals_imp(const char*, int, int);
 #define test_int_equals(expression, expected) test_int_equals_imp(#expression, expression, expected)
 
+void test_double_imp(const char*, double, double);
+#define test_double(expression, expected) test_double_imp(#expression, expression, expected)
+
 void test_void_imp(const char*);
 #define test_void(expression) ((void)expression), test_void_imp(#expression)
 
@@ -15,7 +18,7 @@ void test_bool_imp(const char *, int, int);
 #define test_true(expression) test_bool_imp(#expression, expression, 1)
 #define test_min(expression, min) test_bool_imp(#expression, min < 0 ? expression <= min : expression >= min, 1)
 #define test_max(expression, max) test_bool_imp(#expression, 0 < expression && expression <= max, 1)
-#define test_defined(expression) test_false(expression & 0)
+#define test_defined(expression) test_false(expression * 0)
 
 void test_string_imp(const char*, const char*, const char*);
 #define test_string(expression, string) test_string_imp(#expression, expression, string)