Merging upstream version 1.45.3+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 52 insertions, 0 deletions

diff --git a/src/fluent-bit/lib/cmetrics/include/cmetrics/cmt_math.h b/src/fluent-bit/lib/cmetrics/include/cmetrics/cmt_math.h
new file mode 100644
index 000000000..6f7e3f18f
--- /dev/null
+++ b/src/fluent-bit/lib/cmetrics/include/cmetrics/cmt_math.h
@@ -0,0 +1,52 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  CMetrics
+ *  ========
+ *  Copyright 2021-2022 The CMetrics Authors
+ *
+ *  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.
+ */
+
+#ifndef CMT_MATH_H
+#define CMT_MATH_H
+
+#include <inttypes.h>
+#include <string.h>
+
+union val_union {
+    uint64_t u;
+    double d;
+};
+
+/*
+ * This is not rocket-science and to make things easier we assume that operating on
+ * floating pointer numbers we will lose precision. So we just do simple casts.
+ */
+
+static inline uint64_t cmt_math_d64_to_uint64(double val)
+{
+    union val_union u;
+
+    u.d = val;
+    return u.u;
+}
+
+static inline double cmt_math_uint64_to_d64(uint64_t val)
+{
+    union val_union u;
+
+    u.u = val;
+    return u.d;
+}
+
+#endif