Implement log1p builtin

llvm-svn: 219230

1 files changed, 50 insertions, 0 deletions

diff --git a/libclc/generic/lib/math/tables.h b/libclc/generic/lib/math/tables.h
new file mode 100644
index 00000000000..925544064a5
--- /dev/null
+++ b/libclc/generic/lib/math/tables.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2014 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#define TABLE_SPACE __constant
+
+#define TABLE_MANGLE(NAME) __clc_##NAME
+
+#define DECLARE_TABLE(TYPE,NAME,LENGTH) \
+    TABLE_SPACE TYPE NAME [ LENGTH ]
+
+#define TABLE_FUNCTION(TYPE,TABLE,NAME) \
+    TYPE TABLE_MANGLE(NAME)(size_t idx) { \
+        return TABLE[idx]; \
+    }
+
+#define TABLE_FUNCTION_DECL(TYPE, NAME) \
+    TYPE TABLE_MANGLE(NAME)(size_t idx);
+
+#define USE_TABLE(NAME, IDX) \
+    TABLE_MANGLE(NAME)(IDX)
+
+TABLE_FUNCTION_DECL(float2, loge_tbl);
+TABLE_FUNCTION_DECL(float, log_inv_tbl);
+
+#ifdef cl_khr_fp64
+
+#pragma OPENCL EXTENSION cl_khr_fp64 : enable
+
+TABLE_FUNCTION_DECL(double2, ln_tbl);
+
+#endif // cl_khr_fp64