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54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/* Copyright (C) 1996-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <math.h>
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#include "mathimpl.h"
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#ifndef SUFF
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#define SUFF
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#endif
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#ifndef float_type
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#define float_type double
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#endif
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#define CONCATX(a,b) __CONCAT(a,b)
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#define s(name) CONCATX(name,SUFF)
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#define m81(func) __m81_u(s(func))
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float_type
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s(__modf) (float_type x, float_type *iptr)
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{
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float_type x_int, result;
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unsigned long x_cond;
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__asm ("fintrz%.x %1, %0" : "=f" (x_int) : "f" (x));
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*iptr = x_int;
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x_cond = __m81_test (x);
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if (x_cond & __M81_COND_INF)
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{
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result = 0;
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if (x_cond & __M81_COND_NEG)
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result = -result;
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}
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else if (x_cond & __M81_COND_ZERO)
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result = x;
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else
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result = x - x_int;
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return result;
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}
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weak_alias (s(__modf), s(modf))
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