39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
/* Subtract _Float128 values, converting the result to _Float64x.
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Copyright (C) 2018 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 <math-narrow.h>
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/* math_ldbl.h defines _Float128 to long double for this directory,
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but when they are different, this function must be defined with
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_Float128 arguments to avoid defining an alias with an incompatible
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type. */
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#undef _Float128
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_Float64x
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__f64xsubf128 (_Float128 x, _Float128 y)
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{
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#if __HAVE_FLOAT64X_LONG_DOUBLE && __HAVE_DISTINCT_FLOAT128
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NARROW_SUB_ROUND_TO_ODD (x, y, _Float64x, union ieee854_long_double, l,
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mantissa3);
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#else
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NARROW_SUB_TRIVIAL (x, y, _Float64x);
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#endif
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}
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libm_alias_float64x_float128 (sub)
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