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/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
/* Based on newlib/libm/mathfp/sf_asinh.c in Newlib. */
#include "amdgcnmach.h"
v64sf v64sf_logf_aux (v64sf, v64si);
v64sf v64sf_log1pf_aux (v64sf, v64si);
v64sf v64sf_sqrtf_aux (v64sf, v64si);
#if defined (__has_builtin) && __has_builtin (__builtin_gcn_fabsvf)
DEF_VS_MATH_FUNC (v64sf, asinhf, v64sf x)
{
static const float one = 1.0000000000e+00; /* 0x3F800000 */
static const float ln2 = 6.9314718246e-01; /* 0x3f317218 */
static const float huge = 1.0000000000e+30;
FUNCTION_INIT (v64sf);
v64sf w;
v64si hx;
GET_FLOAT_WORD (hx, x, NO_COND);
v64si ix = hx & 0x7fffffff;
VECTOR_IF (ix >=0x7f800000, cond) /* x is inf or NaN */
VECTOR_RETURN (x + x, cond);
VECTOR_ENDIF
VECTOR_IF (ix < 0x31800000, cond) /* |x|<2**-28 */
VECTOR_IF2 (huge+x > one, cond2, cond) /* return x inexact except 0 */
VECTOR_RETURN (x, cond);
VECTOR_ENDIF
VECTOR_ENDIF
VECTOR_IF (ix > 0x4d800000, cond) /* x > 2**28 */
VECTOR_COND_MOVE (w, v64sf_logf_aux (__builtin_gcn_fabsvf (x), __mask) +
ln2,
cond);
VECTOR_ELSEIF (ix > 0x40000000, cond) /* 2**28 > |x| > 2.0 */
v64sf t = __builtin_gcn_fabsvf (x);
VECTOR_COND_MOVE (w, v64sf_logf_aux (2.0f * t + 1.0f / (v64sf_sqrtf_aux (x*x + 1.0f, __mask) + t), __mask),
cond);
VECTOR_ELSE (cond) /* 2.0 > |x| > 2**-28 */
v64sf t = x * x;
VECTOR_COND_MOVE (w, v64sf_log1pf_aux (__builtin_gcn_fabsvf (x) + t / (1.0f + v64sf_sqrtf_aux (1.0f + t, __mask)), __mask),
cond);
VECTOR_ENDIF
VECTOR_IF (hx > 0, cond)
VECTOR_RETURN (w, cond);
VECTOR_ELSE (cond)
VECTOR_RETURN (-w, cond);
VECTOR_ENDIF
FUNCTION_RETURN;
}
DEF_VARIANTS (asinhf, sf, sf)
#endif
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