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

/* llround function.  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 <endian.h>
#include <math_ldbl_opt.h>
#include <libm-alias-double.h>

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

/* long long [r3] llround (float x [fp1])  */

ENTRY_TOCLESS (__llround)
	CALL_MCOUNT 0
	frin	fp1,fp1	/* Round to nearest +-0.5.  */
	fctidz	fp1,fp1	/* Convert To Integer DW round toward 0.  */
	MFVSRD_R3_V1
	blr
END (__llround)

strong_alias (__llround, __lround)
libm_alias_double (__llround, llround)
libm_alias_double (__lround, lround)
/* 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 (__llround, __llroundf)
weak_alias (__llround, llroundf)
strong_alias (__lround, __lroundf)
weak_alias (__lround, lroundf)
Commit	Line	Data
fe13a20c	1	/* llround function. POWER8 PowerPC64 version.
bfff8b1b	2	Copyright (C) 2014-2017 Free Software Foundation, Inc.
fe13a20c AZ	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with the GNU C Library; if not, see
	17	<http://www.gnu.org/licenses/>. */
	18
	19	#include <sysdep.h>
757d9dd5	20	#include <endian.h>
fe13a20c	21	#include <math_ldbl_opt.h>
d17542d2	22	#include <libm-alias-double.h>
fe13a20c	23
7110166d	24	#define MFVSRD_R3_V1 .long 0x7c230066 /* mfvsrd r3,vs1 */
fe13a20c AZ	25
	26	/* long long [r3] llround (float x [fp1]) */
	27
d5b41185	28	ENTRY_TOCLESS (__llround)
fe13a20c AZ	29	CALL_MCOUNT 0
	30	frin fp1,fp1 /* Round to nearest +-0.5. */
	31	fctidz fp1,fp1 /* Convert To Integer DW round toward 0. */
	32	MFVSRD_R3_V1
	33	blr
	34	END (__llround)
	35
	36	strong_alias (__llround, __lround)
d17542d2 JM	37	libm_alias_double (__llround, llround)
d17542d2 JM	38	libm_alias_double (__lround, lround)
001b09a6 RS	39	/* The double version also works for single-precision as both float and
	40	double parameters are passed in 64bit FPRs and both versions are expected
	41	to return [long] long type. */
	42	strong_alias (__llround, __llroundf)
	43	weak_alias (__llround, llroundf)
	44	strong_alias (__lround, __lroundf)
	45	weak_alias (__lround, lroundf)