forked from OSchip/llvm-project
72 lines
2.3 KiB
Common Lisp
72 lines
2.3 KiB
Common Lisp
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/*
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* Copyright (c) 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <clc/clc.h>
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#include "math.h"
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#include "sincos_helpers.h"
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#include "../clcmacro.h"
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#include "tables.h"
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_CLC_DEF _CLC_OVERLOAD float __clc_tan(float x)
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{
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int ix = as_int(x);
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int ax = ix & 0x7fffffff;
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float dx = as_float(ax);
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float r0, r1;
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int regn = __clc_argReductionS(&r0, &r1, dx);
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float t = __clc_tanf_piby4(r0 + r1, regn);
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t = as_float(as_int(t) ^ (ix ^ ax));
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t = ax >= PINFBITPATT_SP32 ? as_float(QNANBITPATT_SP32) : t;
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//Take care of subnormals
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t = (x == 0.0f) ? x : t;
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return t;
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}
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_CLC_UNARY_VECTORIZE(_CLC_DEF _CLC_OVERLOAD, float, __clc_tan, float);
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#ifdef cl_khr_fp64
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#include "sincosD_piby4.h"
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_CLC_DEF _CLC_OVERLOAD double __clc_tan(double x)
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{
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double y = fabs(x);
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double r, rr;
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int regn;
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if (y < 0x1.0p+30)
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__clc_remainder_piby2_medium(y, &r, &rr, ®n);
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else
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__clc_remainder_piby2_large(y, &r, &rr, ®n);
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double2 tt = __clc_tan_piby4(r, rr);
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int2 t = as_int2(regn & 1 ? tt.y : tt.x);
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t.hi ^= (x < 0.0) << 31;
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return isnan(x) || isinf(x) ? as_double(QNANBITPATT_DP64) : as_double(t);
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}
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_CLC_UNARY_VECTORIZE(_CLC_DEF _CLC_OVERLOAD, double, __clc_tan, double);
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#endif
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