| 1 | /* -------------------------------------------------------------- */ |
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| 2 | /* (C)Copyright 2001,2008, */ |
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| 3 | /* International Business Machines Corporation, */ |
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| 4 | /* Sony Computer Entertainment, Incorporated, */ |
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| 5 | /* Toshiba Corporation, */ |
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| 6 | /* */ |
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| 7 | /* All Rights Reserved. */ |
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| 8 | /* */ |
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| 9 | /* Redistribution and use in source and binary forms, with or */ |
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| 10 | /* without modification, are permitted provided that the */ |
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| 11 | /* following conditions are met: */ |
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| 12 | /* */ |
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| 13 | /* - Redistributions of source code must retain the above copyright*/ |
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| 14 | /* notice, this list of conditions and the following disclaimer. */ |
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| 15 | /* */ |
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| 16 | /* - Redistributions in binary form must reproduce the above */ |
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| 17 | /* copyright notice, this list of conditions and the following */ |
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| 18 | /* disclaimer in the documentation and/or other materials */ |
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| 19 | /* provided with the distribution. */ |
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| 20 | /* */ |
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| 21 | /* - Neither the name of IBM Corporation nor the names of its */ |
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| 22 | /* contributors may be used to endorse or promote products */ |
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| 23 | /* derived from this software without specific prior written */ |
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| 24 | /* permission. */ |
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| 25 | /* */ |
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| 26 | /* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */ |
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| 27 | /* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */ |
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| 28 | /* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ |
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| 29 | /* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */ |
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| 30 | /* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */ |
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| 31 | /* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ |
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| 32 | /* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT */ |
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| 33 | /* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */ |
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| 34 | /* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */ |
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| 35 | /* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */ |
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| 36 | /* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */ |
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| 37 | /* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ |
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| 38 | /* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ |
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| 39 | /* -------------------------------------------------------------- */ |
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| 40 | /* PROLOG END TAG zYx */ |
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| 41 | #ifdef __SPU__ |
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| 42 | #ifndef _LOG10D2_H_ |
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| 43 | #define _LOG10D2_H_ 1 |
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| 44 | |
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| 45 | #include <spu_intrinsics.h> |
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| 46 | |
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| 47 | |
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| 48 | #include "log2d2.h" |
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| 49 | |
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| 50 | /* |
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| 51 | * FUNCTION |
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| 52 | * vector double _log10d2(vector double x) |
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| 53 | * |
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| 54 | * DESCRIPTION |
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| 55 | * _log10d2 computes log (base 10) for each of the double word |
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| 56 | * elements the input vector x. log10_v |
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| 57 | * is computed using log2d2 as follows: |
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| 58 | * |
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| 59 | * log10d2(x) = log2d2(x) / log2d2(10); |
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| 60 | */ |
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| 61 | static __inline vector double _log10d2(vector double x) |
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| 62 | { |
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| 63 | return (spu_mul(_log2d2(x), spu_splats(0.301029995663981195213))); |
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| 64 | } |
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| 65 | |
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| 66 | #endif /* _LOG10D2_H_ */ |
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| 67 | #endif /* __SPU__ */ |
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