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Diffstat (limited to 'newlib/libm/machine/spu/headers/asinf4.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/asinf4.h | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/newlib/libm/machine/spu/headers/asinf4.h b/newlib/libm/machine/spu/headers/asinf4.h deleted file mode 100644 index e9db1408b..000000000 --- a/newlib/libm/machine/spu/headers/asinf4.h +++ /dev/null @@ -1,144 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2001,2008, */ -/* International Business Machines Corporation, */ -/* Sony Computer Entertainment, Incorporated, */ -/* Toshiba 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 _ASINF4_H_ -#define _ASINF4_H_ 1 - -#include <spu_intrinsics.h> - -#include "divf4.h" -#include "sqrtf4.h" - -/* - * FUNCTION - * vector float _asinf4(vector float x) - * - * DESCRIPTION - * The _asinf4 function computes the arc sine for a vector of values x; - * that is the values whose sine is x. Results are undefined if x is - * outside the range [-1, 1]. - * - */ -static __inline vector float _asinf4(vector float x) -{ - /* The arcsin is computed using two different algorithms, depending - * upon the absolute value of the input. For inputs in the range - * [0, PI/4], it is computed as the ratio of two polynomials. - * - * asin(x) = p/q; - * - * where p = P11*x^11 + P09*x^9 + P07*x^7 + P05*x^5 + P03*x3 + x - * q = Q08*x^8 + Q06*x^6 + Q04*x^4 + Q02*x^2 + Q00 - * - * For the range of value [PI/4, 1], the arcsin is computed using: - * - * asin = PI/2 - sqrt(1 - x) * r; - * - * where r = C07*x^7 + C06*x^6 + C05*x^5 + C04*x^4 + C03*x^3 + C02*x^2 - * C01*x + C00; - */ - vector float r, r1, r2, r_hi, r_lo; - vector float xabs, x2, x4, x6; - vector float p, p_hi, p_lo; - vector float q, q_hi, q_lo; - vector float pi_over_2 = spu_splats(1.5707963267949f); - vector float pi_over_4 = spu_splats(0.7853981633974f); - vector unsigned int msb = spu_splats(0x80000000); - - - x2 = spu_mul(x, x); - x4 = spu_mul(x2, x2); - x6 = spu_mul(x4, x2); - - xabs = spu_andc(x, (vector float)msb); - - /* Compute arc-sin for values in the range [0, PI/4] - */ - p_hi = spu_madd(spu_splats(0.0000347933107596021167570f), x2, - spu_splats(0.000791534994289814532176f)); - p_hi = spu_madd(p_hi, x2, spu_splats(-0.0400555345006794114027f)); - - p_lo = spu_madd(spu_splats(0.201212532134862925881f), x2, - spu_splats(-0.325565818622400915405f)); - p_lo = spu_madd(p_lo, x2, spu_splats(0.166666666666666657415f)); - - p = spu_madd(p_hi, x6, p_lo); - - q_hi = spu_madd(spu_splats(0.0770381505559019352791f), x2, - spu_splats(-0.688283971605453293030f)); - q_hi = spu_madd(q_hi, x2, spu_splats(2.02094576023350569471f)); - - q_lo = spu_madd(spu_splats(-2.40339491173441421878f), x2, - spu_splats(1.0f)); - - q = spu_madd(q_hi, x4, q_lo); - - r1 = spu_madd(_divf4(p, q), spu_mul(xabs, x2), xabs); - - /* Compute arc-sin for values in the range [PI/4, 1] - */ - r_hi = spu_madd(spu_splats(-0.0012624911f), xabs, - spu_splats(0.0066700901f)); - r_hi = spu_madd(r_hi, xabs, spu_splats(-0.0170881256f)); - r_hi = spu_madd(r_hi, xabs, spu_splats(0.0308918810f)); - - r_lo = spu_madd(spu_splats(-0.0501743046f), xabs, - spu_splats(0.0889789874f)); - r_lo = spu_madd(r_lo, xabs, spu_splats(-0.2145988016f)); - r_lo = spu_madd(r_lo, xabs, pi_over_2); - - r = spu_madd(r_hi, x4, r_lo); - - r2 = spu_nmsub(r, _sqrtf4(spu_sub(spu_splats(1.0f), xabs)), - pi_over_2); - - /* Select the result depending upon the input value. Correct the - * sign of the result. - */ - return (spu_sel(spu_sel(r1, r2, spu_cmpgt(xabs, pi_over_4)), - x, msb)); -} - -#endif /* _ASINF4_H_ */ -#endif /* __SPU__ */ - - |