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Continuing the preparation for additional _FloatN / _FloatNx function aliases, this patch makes alpha libm function implementations use libm_alias_float macros to define function aliases. In the case of the ABI compatibility for complex functions, libm_alias_float_other is used, with the cfloat_versions macro adjusted to take a function name argument without the trailing 'f' to facilitate this, and cfloat_versions dealing with calling libm_alias_float_other (except for clog10f, which doesn't use that macro because of the complexity associated with __clog10f also being exported). Tested with build-many-glibcs.py for alpha-linux-gnu that installed stripped shared libraries are unchanged by the patch. * sysdeps/alpha/fpu/cfloat-compat.h: Include <libm-alias-float.h>. (cfloat_versions): Take function argument without trailing 'f'. Call libm_alias_float_other. * sysdeps/alpha/fpu/cabsf.c: Update call to cfloat_versions. * sysdeps/alpha/fpu/cargf.c: Likewise. * sysdeps/alpha/fpu/cimagf.c: Likewise. * sysdeps/alpha/fpu/conjf.c: Likewise. * sysdeps/alpha/fpu/crealf.c: Likewise. * sysdeps/alpha/fpu/s_cacosf.c: Likewise. * sysdeps/alpha/fpu/s_cacoshf.c: Likewise. * sysdeps/alpha/fpu/s_casinf.c: Likewise. * sysdeps/alpha/fpu/s_casinhf.c: Likewise. * sysdeps/alpha/fpu/s_catanf.c: Likewise. * sysdeps/alpha/fpu/s_catanhf.c: Likewise. * sysdeps/alpha/fpu/s_ccosf.c: Likewise. * sysdeps/alpha/fpu/s_ccoshf.c: Likewise. * sysdeps/alpha/fpu/s_cexpf.c: Likewise. * sysdeps/alpha/fpu/s_clogf.c: Likewise. * sysdeps/alpha/fpu/s_cpowf.c: Likewise. * sysdeps/alpha/fpu/s_cprojf.c: Likewise. * sysdeps/alpha/fpu/s_csinf.c: Likewise. * sysdeps/alpha/fpu/s_csinhf.c: Likewise. * sysdeps/alpha/fpu/s_csqrtf.c: Likewise. * sysdeps/alpha/fpu/s_ctanf.c: Likewise. * sysdeps/alpha/fpu/s_ctanhf.c: Likewise. * sysdeps/alpha/fpu/s_clog10f.c: Include <libm-alias-float.h>. (clog10f): Use libm_alias_float_other. * sysdeps/alpha/fpu/s_ceilf.c: Include <libm-alias-float.h>. (ceilf): Define using libm_alias_float. * sysdeps/alpha/fpu/s_copysignf.c: Include <libm-alias-float.h>. (copysignf): Define using libm_alias_float. * sysdeps/alpha/fpu/s_fabsf.c: Include <libm-alias-float.h>. (fabsf): Define using libm_alias_float. * sysdeps/alpha/fpu/s_floorf.c: Include <libm-alias-float.h>. (floorf): Define using libm_alias_float. * sysdeps/alpha/fpu/s_fmax.S: Include <libm-alias-float.h>. (fmaxf): Define using libm_alias_float. * sysdeps/alpha/fpu/s_fmin.S: Include <libm-alias-float.h>. (fminf): Define using libm_alias_float. * sysdeps/alpha/fpu/s_lrintf.c: Include <libm-alias-float.h>. (lrintf): Define using libm_alias_float. (llrintf): Likewise. * sysdeps/alpha/fpu/s_lroundf.c: Include <libm-alias-float.h>. (lroundf): Define using libm_alias_float. (llroundf): Likewise. * sysdeps/alpha/fpu/s_rintf.c: Include <libm-alias-float.h>. (rintf): Define using libm_alias_float. * sysdeps/alpha/fpu/s_truncf.c: Include <libm-alias-float.h>. (truncf): Define using libm_alias_float.
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* Copyright (C) 2007-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson.
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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 <libm-alias-float.h>
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/* Use the chopped rounding mode conversion instructions to implement trunc. */
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float
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__truncf (float x)
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{
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float two23 = copysignf (0x1.0p23, x);
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float r, tmp;
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if (isgreaterequal (fabsf (x), 0x1.0p23))
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return x;
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__asm (
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"adds/suc %2, %3, %1\n\tsubs/suc %1, %3, %0"
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: "=&f"(r), "=&f"(tmp)
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: "f"(x), "f"(two23));
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/* trunc(-0) == -0, and in general we'll always have the same
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sign as our input. */
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return copysignf (r, x);
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}
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libm_alias_float (__trunc, trunc)
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