derek.holloway
7502bf64a4
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43 lines
1.4 KiB
Common Lisp
43 lines
1.4 KiB
Common Lisp
/*===--------------------------------------------------------------------------
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* ROCm Device Libraries
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*
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* This file is distributed under the University of Illinois Open Source
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* License. See LICENSE.TXT for details.
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*===------------------------------------------------------------------------*/
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#include "mathD.h"
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#include "trigredD.h"
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CONSTATTR struct scret
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MATH_PRIVATE(sincosred)(double x)
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{
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const double S0 = -0x1.5555555555555p-3;
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const double S1 = 0x1.1111111110bb3p-7;
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const double S2 = -0x1.a01a019e83e5cp-13;
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const double S3 = 0x1.71de3796cde01p-19;
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const double S4 = -0x1.ae600b42fdfa7p-26;
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const double S5 = 0x1.5e0b2f9a43bb8p-33;
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const double C0 = 0x1.5555555555555p-5;
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const double C1 = -0x1.6c16c16c16967p-10;
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const double C2 = 0x1.a01a019f4ec90p-16;
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const double C3 = -0x1.27e4fa17f65f6p-22;
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const double C4 = 0x1.1eeb69037ab78p-29;
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const double C5 = -0x1.907db46cc5e42p-37;
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double x2 = x*x;
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double r = 0.5 * x2;
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double t = 1.0 - r;
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double u = 1.0 - t;
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double v = u - r;
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double cx = t + MATH_MAD(x2*x2, MATH_MAD(x2, MATH_MAD(x2, MATH_MAD(x2, MATH_MAD(x2, MATH_MAD(x2, C5, C4), C3), C2), C1), C0), v);
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double sx = MATH_MAD(x2*x, MATH_MAD(x2, MATH_MAD(x2, MATH_MAD(x2, MATH_MAD(x2, MATH_MAD(x2, S5, S4), S3), S2), S1), S0), x);
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struct scret ret;
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ret.c = cx;
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ret.s = sx;
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return ret;
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}
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