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48 lines
1.9 KiB
C
48 lines
1.9 KiB
C
/* Multiple versions of llroundf.
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Copyright (C) 2017-2018 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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/* Redefine lroundf/__lroundf so that the compiler won't complain about
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the type mismatch with the IFUNC selector in strong_alias below. */
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#define lroundf __hidden_lroundf
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#define __lroundf __hidden___lroundf
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#include <math.h>
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#undef lroundf
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#undef __lroundf
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#include "init-arch.h"
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#include <libm-alias-float.h>
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extern __typeof (__llroundf) __llroundf_ppc64 attribute_hidden;
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extern __typeof (__llroundf) __llround_power6x attribute_hidden;
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extern __typeof (__llroundf) __llround_power8 attribute_hidden;
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/* The ppc64 ABI passes float and double parameters in 64bit floating point
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registers (at least up to a point) as IEEE binary64 format, so effectively
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of "double" type. Both l[l]round and l[l]roundf return long type. So these
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functions have identical signatures and functionality, and can use a
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single implementation. */
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libc_ifunc (__llroundf,
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(hwcap2 & PPC_FEATURE2_ARCH_2_07)
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? __llround_power8 :
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(hwcap & PPC_FEATURE_POWER6_EXT)
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? __llround_power6x
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: __llroundf_ppc64);
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libm_alias_float (__llround, llround)
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strong_alias (__llroundf, __lroundf)
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libm_alias_float (__lround, lround)
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