derek.holloway
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37 lines
1011 B
Common Lisp
37 lines
1011 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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#include "trigpiredF.h"
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float
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MATH_MANGLE(sincospi)(float x, __private float *cp)
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{
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float ax = BUILTIN_ABS_F32(x);
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struct redret r = MATH_PRIVATE(trigpired)(ax);
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struct scret sc = MATH_PRIVATE(sincospired)(r.hi);
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int flip = r.i > 1 ? SIGNBIT_SP32 : 0;
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bool odd = (r.i & 1) != 0;
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float s = odd ? sc.c : sc.s;
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s = AS_FLOAT(AS_INT(s) ^ flip ^ (AS_INT(ax) ^ AS_INT(x)));
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sc.s = -sc.s;
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float c = odd ? sc.s : sc.c;
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c = AS_FLOAT(AS_INT(c) ^ flip);
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if (!FINITE_ONLY_OPT()) {
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bool finite = BUILTIN_ISFINITE_F32(ax);
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c = finite ? c : QNAN_F32;
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s = finite ? s : QNAN_F32;
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}
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*cp = c;
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return s;
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}
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