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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/math/pow_data.h | |
Initial version
Diffstat (limited to 'src/math/pow_data.h')
| -rw-r--r-- | src/math/pow_data.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/math/pow_data.h b/src/math/pow_data.h new file mode 100644 index 0000000..5d609ae --- /dev/null +++ b/src/math/pow_data.h @@ -0,0 +1,22 @@ +/* + * Copyright (c) 2018, Arm Limited. + * SPDX-License-Identifier: MIT + */ +#ifndef _POW_DATA_H +#define _POW_DATA_H + +#include <features.h> + +#define POW_LOG_TABLE_BITS 7 +#define POW_LOG_POLY_ORDER 8 +extern hidden const struct pow_log_data { + double ln2hi; + double ln2lo; + double poly[POW_LOG_POLY_ORDER - 1]; /* First coefficient is 1. */ + /* Note: the pad field is unused, but allows slightly faster indexing. */ + struct { + double invc, pad, logc, logctail; + } tab[1 << POW_LOG_TABLE_BITS]; +} __pow_log_data; + +#endif |