derek.holloway
7502bf64a4
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49 lines
1.4 KiB
Common Lisp
49 lines
1.4 KiB
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 "mathD.h"
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#define DOUBLE_SPECIALIZATION
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#include "ep.h"
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extern CONSTATTR double2 MATH_PRIVATE(epexpep)(double2 z);
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CONSTATTR double2
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MATH_MANGLE(csinh)(double2 z)
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{
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double x = BUILTIN_ABS_F64(z.x);
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double2 e = MATH_PRIVATE(epexpep)(sub(x, con(0x1.62e42fefa39efp+0,0x1.abc9e3b39803fp-55)));
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double2 er = rcp(e);
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er = ldx(er, -4);
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double2 cx = fadd(e, er);
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double2 sx = fsub(e, er);
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double cy;
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double sy = MATH_MANGLE(sincos)(z.y, &cy);
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double cxhi = cx.hi;
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double sxhi = sx.hi;
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if (!FINITE_ONLY_OPT()) {
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bool b = x >= 0x1.6395a2079b70cp+9;
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cxhi = b ? PINF_F64 : cxhi;
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sxhi = b ? PINF_F64 : sxhi;
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}
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bool s = x >= 0x1.0p-27;
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double rr = BUILTIN_FLDEXP_F64(BUILTIN_COPYSIGN_F64(s ? sxhi : x, z.x) * cy, s);
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double ri = BUILTIN_FLDEXP_F64(cxhi * sy, 1);
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if (!FINITE_ONLY_OPT()) {
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rr = (!BUILTIN_CLASS_F64(x, CLASS_PZER|CLASS_NZER|CLASS_PINF|CLASS_NINF) |
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BUILTIN_ISFINITE_F64(z.y)) ? rr : z.x;
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ri = (BUILTIN_ISFINITE_F64(x) | (z.y != 0.0)) ? ri : z.y;
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}
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return (double2)(rr, ri);
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}
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