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Diffstat (limited to 'newlib/libm/machine/spu/headers/log1pd2.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/log1pd2.h | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/newlib/libm/machine/spu/headers/log1pd2.h b/newlib/libm/machine/spu/headers/log1pd2.h deleted file mode 100644 index 099f7b44e..000000000 --- a/newlib/libm/machine/spu/headers/log1pd2.h +++ /dev/null @@ -1,125 +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 _LOG1PD2_H_ -#define _LOG1PD2_H_ 1 - -#include <spu_intrinsics.h> -#include "simdmath.h" - -#include "logd2.h" -#include "divd2.h" - - - -#define LOG1PD2_P0 0.0000000000000000000000000e+00 -#define LOG1PD2_P1 1.0000000000000000000000000e+00 -#define LOG1PD2_P2 2.3771612265431403265836252e+00 -#define LOG1PD2_P3 2.0034423569559494104908026e+00 -#define LOG1PD2_P4 7.1309327316770110272159400e-01 -#define LOG1PD2_P5 9.8219761968547217301228613e-02 -#define LOG1PD2_P6 3.4385125174546914139650511e-03 - -#define LOG1PD2_Q0 1.0000000000000000000000000e+00 -#define LOG1PD2_Q1 2.8771612265431403265836252e+00 -#define LOG1PD2_Q2 3.1086896368941925317130881e+00 -#define LOG1PD2_Q3 1.5583843494335058998956356e+00 -#define LOG1PD2_Q4 3.6047236436186669283898709e-01 -#define LOG1PD2_Q5 3.2620075387969869884496887e-02 -#define LOG1PD2_Q6 6.8047193336239690346356479e-04 - - -/* - * FUNCTION - * vector double _log1pd2(vector double x) - * - * DESCRIPTION - * The function _log1pd2 computes the natural logarithm of x + 1 - * for each of the double word elements of x. - * - */ - -static __inline vector double _log1pd2(vector double x) -{ - vector double oned = spu_splats(1.0); - vector double rangehi = spu_splats(0.35); - vector double rangelo = spu_splats(0.0); - vector unsigned long long use_log; - vector double pr, qr; - vector double eresult; - vector double rresult; - vector double result; - - /* Compiler Bug. Replace xbug with x when spu_cmp*() doesn't - * modify it's arguments! */ - volatile vector double xbug = x; - use_log = spu_or(spu_cmpgt(xbug, rangehi), spu_cmpgt(rangelo, xbug)); - - /* - * Calculate directly using log(x+1) - */ - eresult = _logd2(spu_add(x, oned)); - - /* - * For x in [0.0,0.35], use a rational approximation. - */ - pr = spu_madd(x, spu_splats(LOG1PD2_P6), spu_splats(LOG1PD2_P5)); - qr = spu_madd(x, spu_splats(LOG1PD2_Q6), spu_splats(LOG1PD2_Q5)); - pr = spu_madd(pr, x, spu_splats(LOG1PD2_P4)); - qr = spu_madd(qr, x, spu_splats(LOG1PD2_Q4)); - pr = spu_madd(pr, x, spu_splats(LOG1PD2_P3)); - qr = spu_madd(qr, x, spu_splats(LOG1PD2_Q3)); - pr = spu_madd(pr, x, spu_splats(LOG1PD2_P2)); - qr = spu_madd(qr, x, spu_splats(LOG1PD2_Q2)); - pr = spu_madd(pr, x, spu_splats(LOG1PD2_P1)); - qr = spu_madd(qr, x, spu_splats(LOG1PD2_Q1)); - pr = spu_madd(pr, x, spu_splats(LOG1PD2_P0)); - qr = spu_madd(qr, x, spu_splats(LOG1PD2_Q0)); - rresult = _divd2(pr, qr); - - /* - * Select either direct calculation or rational approximation. - */ - result = spu_sel(rresult, eresult, use_log); - - return result; -} - -#endif /* _LOG1PD2_H_ */ -#endif /* __SPU__ */ |