derek.holloway
7502bf64a4
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34 lines
865 B
Common Lisp
34 lines
865 B
Common Lisp
/*===--------------------------------------------------------------------------
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* ROCm Device Libraries
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*
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* This file is distributed under the University of Illinois Open Source
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* License. See LICENSE.TXT for details.
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*===------------------------------------------------------------------------*/
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#include "mathF.h"
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#define FLOAT_SPECIALIZATION
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#include "ep.h"
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extern CONSTATTR float MATH_PRIVATE(lnep)(float2 a, int ea);
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CONSTATTR float
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MATH_MANGLE(asinh)(float x)
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{
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float y = BUILTIN_ABS_F32(x);
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bool b = y >= 0x1.0p+64f;
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float s = b ? 0x1.0p-64f : 1.0f;
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float sy = y * s;
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float2 a = add(sy, root2(add(sqr(sy), s*s)));
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float z = MATH_PRIVATE(lnep)(a, b ? 64 : 0);
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z = y < 0x1.0p-12f ? y : z;
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if (!FINITE_ONLY_OPT()) {
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z = y == PINF_F32 ? y : z;
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}
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return BUILTIN_COPYSIGN_F32(z, x);
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}
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