add floating point test cases. One for fuzzing (test-floatingpoint.c) and one for testing all cases with the instrumented program (test-fp_cases.c)

1 files changed, 190 insertions, 0 deletions

diff --git a/test/test-fp_cases.c b/test/test-fp_cases.c
new file mode 100644
index 00000000..006ae32f
--- /dev/null
+++ b/test/test-fp_cases.c
@@ -0,0 +1,190 @@
+/* test cases for floating point comparison transformations
+ * compile with -DFLOAT_TYPE=float
+ *          or  -DFLOAT_TYPE=double
+ *          or  -DFLOAT_TYPE="long double"
+ */
+
+
+#include <assert.h>
+
+int main() {
+  volatile FLOAT_TYPE a,b;
+  /* different values */
+  a = -2.1; b = -2;  /* signs equal, exp equal, mantissa > */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 1.8; b = 2.1;  /* signs equal, exp differ, mantissa > */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 2; b = 2.1;    /* signs equal, exp equal, mantissa < */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -2; b = -1.8;  /* signs equal, exp differ, mantissa < */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -1; b = 1;     /* signs differ, exp equal, mantissa equal */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -1; b = 0;     /* signs differ, exp differ, mantissa equal */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -2; b = 2.8;   /* signs differ, exp equal, mantissa < */ 
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -2; b = 1.8;   /* signs differ, exp differ, mantissa < */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+
+  a = -2; b = -2.1;  /* signs equal, exp equal, mantissa > */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 2.1; b = 1.8;  /* signs equal, exp differ, mantissa > */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 2.1; b = 2;    /* signs equal, exp equal, mantissa < */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -1.8; b = -2;  /* signs equal, exp differ, mantissa < */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 1; b = -1;     /* signs differ, exp equal, mantissa equal */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 0; b = -1;     /* signs differ, exp differ, mantissa equal */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 2.8; b = -2;   /* signs differ, exp equal, mantissa < */ 
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 1.8; b = -2;   /* signs differ, exp differ, mantissa < */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  /* equal values */
+  a = 0; b = 0;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = -0; b = 0;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = 1; b = 1;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = 0.5; b = 0.5;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = -1; b = -1;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = -0.5; b = -0.5;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+}