From e63a0e277c36492da86175467c10963cc0ab07e9 Mon Sep 17 00:00:00 2001
From: wangjiaming0909 <604227650@qq.com>
Date: Fri, 13 Dec 2024 16:01:04 +0800
Subject: [PATCH] decimal: add decimal.c

---
 include/libs/decimal/decimal.h     | 32 ++++++++++++++++++++++++++++++
 source/libs/decimal/CMakeLists.txt | 16 +++++++++++++++
 source/libs/decimal/src/decimal.c  | 27 +++++++++++++++++++++++++
 3 files changed, 75 insertions(+)
 create mode 100644 include/libs/decimal/decimal.h
 create mode 100644 source/libs/decimal/CMakeLists.txt
 create mode 100644 source/libs/decimal/src/decimal.c

diff --git a/include/libs/decimal/decimal.h b/include/libs/decimal/decimal.h
new file mode 100644
index 0000000000..a56e241ccc
--- /dev/null
+++ b/include/libs/decimal/decimal.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _TD_DECIMAL_H_
+#define _TD_DECIMAL_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "tdef.h"
+typedef struct SDataType SDataType;
+
+int32_t decimalCalcTypeMod(const SDataType* pType);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_TD_DECIMAL_H_*/
diff --git a/source/libs/decimal/CMakeLists.txt b/source/libs/decimal/CMakeLists.txt
new file mode 100644
index 0000000000..6837ae8eb1
--- /dev/null
+++ b/source/libs/decimal/CMakeLists.txt
@@ -0,0 +1,16 @@
+aux_source_directory(src DECIMAL_SRC)
+
+add_library(decimal STATIC ${DECIMAL_SRC})
+
+target_include_directories(
+    decimal
+    PUBLIC "${TD_SOURCE_DIR}/include/libs/decimal"
+)
+target_link_libraries(
+    decimal
+    PRIVATE os util common qcom nodes
+)
+
+if(${BUILD_TEST})
+    ADD_SUBDIRECTORY(test)
+endif(${BUILD_TEST})
diff --git a/source/libs/decimal/src/decimal.c b/source/libs/decimal/src/decimal.c
new file mode 100644
index 0000000000..49bb2b8433
--- /dev/null
+++ b/source/libs/decimal/src/decimal.c
@@ -0,0 +1,27 @@
+/*
+ *
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "decimal.h"
+#include "querynodes.h"
+
+int32_t decimalCalcTypeMod(const SDataType* pType) {
+  if (IS_DECIMAL_TYPE(pType->type)) {
+    return (pType->precision << 8) + pType->scale;
+  }
+  return 0;
+}
+
+