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Diffstat (limited to 'newlib/libm/machine/spu/headers/coshf4.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/coshf4.h | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/newlib/libm/machine/spu/headers/coshf4.h b/newlib/libm/machine/spu/headers/coshf4.h deleted file mode 100644 index 453fad4a5..000000000 --- a/newlib/libm/machine/spu/headers/coshf4.h +++ /dev/null @@ -1,100 +0,0 @@ -/* -------------------------------------------------------------- */ -/* (C)Copyright 2006,2008, */ -/* 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 _COSHF4_H_ -#define _COSHF4_H_ 1 - -#include <spu_intrinsics.h> - -#include "expf4.h" -#include "recipf4.h" - - -/* - * FUNCTION - * vector float _coshf4(vector float x) - * - * DESCRIPTION - * The _coshf4 function computes the hyperbolic cosines of a vector of - * angles (expressed in radians) to an accuracy of a single precision - * floating point. - * - */ -static __inline vector float _coshf4(vector float x) -{ - // 1.0000 (above this number, use sinh(x) = 0.5 * (e^x - e^-x) - vec_uint4 threshold = (vec_uint4)spu_splats(0x3F800000); - - vec_uint4 sign_mask = (vec_uint4)spu_splats(0x80000000); - - // Coefficents for the Taylor series - vec_float4 f02 = spu_splats(5.0000000000000000E-1f); // 1/2! - vec_float4 f04 = spu_splats(4.1666666666666667E-2f); // 1/4! - vec_float4 f06 = spu_splats(1.3888888888888889E-3f); // 1/6! - vec_float4 f08 = spu_splats(2.4801587301587302E-5f); // 1/8! - vec_float4 f10 = spu_splats(2.7557319223985891E-7f); // 1/10! - vec_float4 f12 = spu_splats(2.0876756987868099E-9f); // 1/12! - - // Perform the calculation as a Taylor series - vec_float4 result; - vector float x2 = spu_mul(x,x); - result = spu_madd(x2,f12,f10); - result = spu_madd(x2,result,f08); - result = spu_madd(x2,result,f06); - result = spu_madd(x2,result,f04); - result = spu_madd(x2,result,f02); - result = spu_madd(x2,result,spu_splats(1.0f)); - - - // Perform calculation as a function of 0.5 * (e^x - e^-x) - vec_float4 ex = _expf4(x); - vec_float4 ex_inv = _recipf4(ex); - - vec_float4 r2= spu_add(ex,ex_inv); - r2 = spu_mul(r2,f02); // we can reused f02 here - - vec_uint4 xabs = spu_andc((vec_uint4)x,sign_mask); - vec_uint4 use_exp = spu_cmpgt(xabs,threshold); - - // Select either the Taylor or exp version - result = spu_sel(result,r2,use_exp); - - return result; -} -#endif /* _COSHF4_H_ */ -#endif /* __SPU__ */ |