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Diffstat (limited to 'newlib/libm/machine/spu/headers/asinhf4.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/asinhf4.h | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/newlib/libm/machine/spu/headers/asinhf4.h b/newlib/libm/machine/spu/headers/asinhf4.h deleted file mode 100644 index 95feb0fe2..000000000 --- a/newlib/libm/machine/spu/headers/asinhf4.h +++ /dev/null @@ -1,182 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2007,2008, */ -/* International Business Machines Corporation */ -/* All Rights Reserved. */ -/* */ -/* Redistribution and use in source and binary forms, with or */ -/* without modification, are permitted provided that the */ -/* following conditions are met: */ -/* */ -/* - Redistributions of source code must retain the above copyright*/ -/* notice, this list of conditions and the following disclaimer. */ -/* */ -/* - Redistributions in binary form must reproduce the above */ -/* copyright notice, this list of conditions and the following */ -/* disclaimer in the documentation and/or other materials */ -/* provided with the distribution. */ -/* */ -/* - Neither the name of IBM Corporation nor the names of its */ -/* contributors may be used to endorse or promote products */ -/* derived from this software without specific prior written */ -/* permission. */ -/* */ -/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */ -/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */ -/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ -/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */ -/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */ -/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ -/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT */ -/* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */ -/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */ -/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */ -/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */ -/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ -/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* -------------------------------------------------------------- */ -/* PROLOG END TAG zYx */ -#ifdef __SPU__ -#ifndef _ASINHF4_H_ -#define _ASINHF4_H_ 1 - -#include <spu_intrinsics.h> - -#include "logf4.h" -#include "sqrtf4.h" - -/* - * FUNCTION - * vector float _asinhf4(vector float x) - * - * DESCRIPTION - * The asinhf4 function returns a vector containing the hyperbolic - * arcsines of the corresponding elements of the input vector. - * - * We are using the formula: - * asinh = ln(|x| + sqrt(x^2 + 1)) - * and the anti-symmetry of asinh. - * - * For x near zero, we use the Taylor series: - * - * infinity - * ------ - * - ' P (0) - * - k-1 k - * asinh x = - ----- x - * - k - * - , - * ------ - * k = 1 - * - * Special Cases: - * - asinh(+0) returns +0 - * - asinh(-0) returns -0 - * - Normally, asinh(+/- infinity) returns +/- infinity, - * but on the SPU, single-precision infinity is not supported, - * so it is treated as a normal number here. - * - */ - -/* - * Maclaurin Series Coefficients - * for x near 0. - */ -#define ASINH_MAC01 1.0000000000000000000000000000000000000000000000000000000000000000000000E0 -#define ASINH_MAC03 -1.6666666666666666666666666666666666666666666666666666666666666666666667E-1 -#define ASINH_MAC05 7.5000000000000000000000000000000000000000000000000000000000000000000000E-2 -#define ASINH_MAC07 -4.4642857142857142857142857142857142857142857142857142857142857142857143E-2 -#define ASINH_MAC09 3.0381944444444444444444444444444444444444444444444444444444444444444444E-2 -#define ASINH_MAC11 -2.2372159090909090909090909090909090909090909090909090909090909090909091E-2 -#define ASINH_MAC13 1.7352764423076923076923076923076923076923076923076923076923076923076923E-2 -#define ASINH_MAC15 -1.3964843750000000000000000000000000000000000000000000000000000000000000E-2 -#define ASINH_MAC17 1.1551800896139705882352941176470588235294117647058823529411764705882353E-2 -#define ASINH_MAC19 -9.7616095291940789473684210526315789473684210526315789473684210526315789E-3 -#define ASINH_MAC21 8.3903358096168154761904761904761904761904761904761904761904761904761905E-3 -#define ASINH_MAC23 -7.3125258735988451086956521739130434782608695652173913043478260869565217E-3 -#define ASINH_MAC25 6.4472103118896484375000000000000000000000000000000000000000000000000000E-3 -#define ASINH_MAC27 -5.7400376708419234664351851851851851851851851851851851851851851851851852E-3 -#define ASINH_MAC29 5.1533096823199041958512931034482758620689655172413793103448275862068966E-3 -#define ASINH_MAC31 -4.6601434869150961599042338709677419354838709677419354838709677419354839E-3 -#if 0 -#define ASINH_MAC33 4.2409070936793630773370916193181818181818181818181818181818181818181818E-3 -#define ASINH_MAC35 -3.8809645588376692363194056919642857142857142857142857142857142857142857E-3 -#define ASINH_MAC37 3.5692053938259345454138678473395270270270270270270270270270270270270270E-3 -#define ASINH_MAC39 -3.2970595034734847453924325796274038461538461538461538461538461538461538E-3 -#define ASINH_MAC41 3.0578216492580306693548109473251714939024390243902439024390243902439024E-3 -#define ASINH_MAC43 -2.8461784011089421678767647854117460029069767441860465116279069767441860E-3 -#endif - - -static __inline vector float _asinhf4(vector float x) -{ - vec_float4 sign_mask = spu_splats(-0.0f); - vec_float4 onef = spu_splats(1.0f); - vec_uint4 oneu = spu_splats(1u); - vec_uint4 twou = spu_splats(2u); - vec_uint4 threeu = spu_splats(3u); - vec_float4 ln2 = spu_splats(6.931471805599453094172321E-1f); - vec_float4 largef = spu_splats(9.21e18f); - vec_float4 result, fresult, mresult; - vec_float4 xabs, xsqu; - /* Where we switch from maclaurin to formula */ - vec_float4 switch_approx = spu_splats(0.74f); - vec_float4 trunc_part2 = spu_splats(20.0f); - vec_uint4 truncadd; - vec_uint4 islarge; - vec_uint4 use_form; - - xabs = spu_andc(x, sign_mask); - xsqu = spu_mul(x, x); - islarge = spu_cmpgt(xabs, largef); - - /* - * Formula: - * asinh = ln(|x| + sqrt(x^2 + 1)) - */ - - vec_float4 logarg = spu_add(xabs, _sqrtf4(spu_madd(xabs, xabs, onef))); - logarg = spu_sel(logarg, xabs, islarge); - fresult = _logf4(logarg); - fresult = spu_sel(fresult, spu_add(fresult, ln2), islarge); - - /* - * Maclaurin Series - */ - mresult = spu_madd(xsqu, spu_splats((float)ASINH_MAC31), spu_splats((float)ASINH_MAC29)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC27)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC25)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC23)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC21)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC19)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC17)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC15)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC13)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC11)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC09)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC07)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC05)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC03)); - mresult = spu_madd(xsqu, mresult, spu_splats((float)ASINH_MAC01)); - mresult = spu_mul(xabs, mresult); - - /* - * Choose between series and formula - */ - use_form = spu_cmpgt(xabs, switch_approx); - result = spu_sel(mresult, fresult, use_form); - - /* - * Truncation correction on spu - */ - truncadd = spu_sel(oneu, threeu, use_form); - truncadd = spu_sel(truncadd, twou, spu_cmpgt(xabs, trunc_part2)); - result = (vec_float4)spu_add((vec_uint4)result, truncadd); - - /* Preserve sign - asinh is anti-symmetric */ - result = spu_sel(result, x, (vec_uint4)sign_mask); - - return result; -} - -#endif /* _ASINHF4_H_ */ -#endif /* __SPU__ */ |