36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* Return positive difference between arguments.
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Copyright (C) 1997-2022 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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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <math.h>
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#include <math-narrow-eval.h>
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FLOAT
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M_DECL_FUNC (__fdim) (FLOAT x, FLOAT y)
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{
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if (islessequal (x, y))
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return 0;
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FLOAT r = math_narrow_eval (x - y);
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if (isinf (r) && !isinf (x) && !isinf (y))
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__set_errno (ERANGE);
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return r;
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}
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declare_mgen_alias (__fdim, fdim);
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