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Diffstat (limited to 'newlib/libm/machine/spu/headers/tanf4.h')
| -rw-r--r-- | newlib/libm/machine/spu/headers/tanf4.h | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/newlib/libm/machine/spu/headers/tanf4.h b/newlib/libm/machine/spu/headers/tanf4.h deleted file mode 100644 index 879891e4e..000000000 --- a/newlib/libm/machine/spu/headers/tanf4.h +++ /dev/null @@ -1,100 +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 _TANF4_H_ -#define _TANF4_H_ 1 - -#include <spu_intrinsics.h> - -#include "cos_sin.h" -#include "divf4.h" - -/* - * FUNCTION - * vector float _tanf4(vector float angle) - * - * DESCRIPTION - * The _tanf4 function computes the tangent of a vector of "angle"s - * (expressed in radians) to an accuracy of single precision floating - * point. - * - */ -static __inline vector float _tanf4(vector float angle) -{ - vec_int4 octant; - vec_uint4 select; - vec_float4 cos, sin; - vec_float4 num, den; - vec_float4 toggle_sign, answer; - - /* Range reduce the input angle x into the range -PI/4 to PI/4 - * by performing simple modulus. - */ - MOD_PI_OVER_FOUR_F(angle, octant); - - /* Compute the cosine and sine of the range reduced input. - */ - COMPUTE_COS_SIN_F(angle, cos, sin); - - /* For each SIMD element, select the numerator, denominator, and sign - * correction depending upon the octant of the original angle. - * - * octants angles numerator denominator sign toggle - * ------- ------------ --------- ----------- ----------- - * 0 0 to 45 sin cos no - * 1,2 45 to 135 cos sin no,yes - * 3,4 135 to 225 sin cos yes,no - * 5,6 225 to 315 cos sin no,yes - * 7 315 to 360 sin cos yes - */ - toggle_sign = (vec_float4)spu_sl(spu_and(octant, 2), 30); - - select = spu_cmpeq(spu_and(octant, 2), 0); - num = spu_sel(cos, sin, select); - den = spu_sel(sin, cos, select); - - answer = spu_xor(_divf4(num, den), toggle_sign); - - return (answer); -} - -#endif /* _TANF4_H_ */ -#endif /* __SPU__ */ |