powerpc: Add optimized version of [l]lrintf

[thirdparty/glibc.git] / sysdeps / powerpc / powerpc64 / power8 / fpu / s_llrint.S

/* Round double to long int.  POWER8 PowerPC64 version.
   Copyright (C) 2014-2017 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>
#include <math_ldbl_opt.h>

#define MFVSRD_R3_V1  .long 0x7c230066     /* mfvsrd  r3,vs1  */

/* long long int[r3] __llrint (double x[fp1])  */
ENTRY_TOCLESS (__llrint)
	CALL_MCOUNT 0
	fctid	fp1,fp1
	MFVSRD_R3_V1
	blr
END (__llrint)

strong_alias (__llrint, __lrint)
weak_alias (__llrint, llrint)
weak_alias (__lrint, lrint)
/* The double version also works for single-precision as both float and
   double parameters are passed in 64bit FPRs and both versions are expected
   to return [long] long type.  */
strong_alias (__llrint, __llrintf)
weak_alias (__llrint, llrintf)
strong_alias (__lrint, __lrintf)
weak_alias (__lrint, lrintf)

#ifdef NO_LONG_DOUBLE
strong_alias (__llrint, __llrintl)
weak_alias (__llrint, llrintl)
strong_alias (__lrint, __lrintl)
weak_alias (__lrint, lrintl)
#endif
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
compat_symbol (libm, __llrint, llrintl, GLIBC_2_1)
compat_symbol (libm, __lrint, lrintl, GLIBC_2_1)
#endif