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-rw-r--r--src/math/log2_data.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/math/log2_data.h b/src/math/log2_data.h
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+/*
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+#ifndef _LOG2_DATA_H
+#define _LOG2_DATA_H
+
+#include <features.h>
+
+#define LOG2_TABLE_BITS 6
+#define LOG2_POLY_ORDER 7
+#define LOG2_POLY1_ORDER 11
+extern hidden const struct log2_data {
+ double invln2hi;
+ double invln2lo;
+ double poly[LOG2_POLY_ORDER - 1];
+ double poly1[LOG2_POLY1_ORDER - 1];
+ struct {
+ double invc, logc;
+ } tab[1 << LOG2_TABLE_BITS];
+#if !__FP_FAST_FMA
+ struct {
+ double chi, clo;
+ } tab2[1 << LOG2_TABLE_BITS];
+#endif
+} __log2_data;
+
+#endif