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a34f76edbd
scalb is a deprecated interface which was obsolescent in POSIX.1-2001, removed in POSIX.1-2008, never made to C standard. significant was originally from BSD and never made in any standard. Fix BZ #31760 by not providing _FloatN aliases for them. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/* Return the mantissa of a floating-point number.
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Copyright (C) 2018-2024 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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/*
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* significand(x) computes just
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* scalb(x, (FLOAT) - ilogb(x)),
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* for exercising the fraction-part(F) IEEE 754-1985 test vector.
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*/
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#include <math.h>
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#include <math_private.h>
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FLOAT
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M_DECL_FUNC (__significand) (FLOAT x)
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{
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return M_SUF (__ieee754_scalb) (x,(FLOAT) - M_SUF (__ilogb) (x));
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}
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/* Don't provide _FloatN aliases for significand which was originally
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from BSD and never made in any standard. */
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#undef libm_alias_float_other_r
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#define libm_alias_float_other_r(from, to, r)
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#undef libm_alias_double_other_r
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#define libm_alias_double_other_r(from, to, r)
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#undef libm_alias_ldouble_other_r
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#define libm_alias_ldouble_other_r(from, to, r)
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#undef libm_alias_float128_other_r
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#define libm_alias_float128_other_r(from, to, r)
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declare_mgen_alias (__significand, significand)
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