Import of the watch repository from Pebble

third_party/jerryscript/tests/unit/test-libm.c

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+/* Copyright 2016 Samsung Electronics Co., Ltd.
+ * Copyright 2016 University of Szeged.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Unit test for jerry-libm
+ */
+
+#include "test-common.h"
+
+static bool passed = true;
+
+static void
+check_int (const char *expr, int computed, int expected)
+{
+  printf ("%s = %d [expected=%d] ", expr, computed, expected);
+
+  bool result = computed == expected;
+  printf ("%s\n", result ? "PASS" : "FAIL");
+
+  passed &= result;
+} /* check_int */
+
+typedef union
+{
+  double value;
+  uint64_t bits64;
+  uint32_t bits32[2];
+} double_bits_t;
+
+static void
+check_double (const char *expr, double computed, double expected)
+{
+  double_bits_t computed_bits;
+  double_bits_t expected_bits;
+
+  computed_bits.value = computed;
+  expected_bits.value = expected;
+
+  printf ("%s = 0x%08x%08x [expected=0x%08x%08x] ", expr,
+          (unsigned int) computed_bits.bits32[1], (unsigned int) computed_bits.bits32[0],
+          (unsigned int) expected_bits.bits32[1], (unsigned int) expected_bits.bits32[0]);
+
+  bool result;
+  if (isnan (computed) && isnan (expected))
+  {
+    result = true;
+  }
+  else
+  {
+    int64_t diff = (int64_t) (computed_bits.bits64 - expected_bits.bits64);
+    if (diff < 0)
+    {
+      diff = -diff;
+    }
+
+    if (diff <= 1) /* tolerate 1 bit of differene in the last place */
+    {
+      result = true;
+      if (diff != 0)
+      {
+        printf ("APPROX ");
+      }
+    }
+    else
+    {
+      result = false;
+    }
+  }
+  printf ("%s\n", result ? "PASS" : "FAIL");
+
+  passed &= result;
+} /* check_double */
+
+int
+main ()
+{
+#define INF INFINITY
+#include "test-libm.inc.h"
+
+  return passed ? 0 : 1;
+} /* main */