[thirdparty/glibc.git] / sysdeps / sparc / sparc32 / sparcv9 / fpu / multiarch / s_llrintf-vis3.S

/* llrintf(), sparc32 v9 vis3 version.
   Copyright (C) 2012-2021 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
   <https://www.gnu.org/licenses/>.  */

#include <sysdep.h>

	/* VIS instructions are used to facilitate the formation of
	   easier constants, and the propagation of the sign bit.  */

#define TWO_TWENTYTHREE	0x4b000000		/* 2**23 */

#define ZERO		%f10			/* 0.0 */
#define SIGN_BIT	%f12			/* -0.0 */

ENTRY (__llrintf_vis3)
	movwtos	%o0, %f1
	sethi	%hi(TWO_TWENTYTHREE), %o2
	fzeros	ZERO

	fnegs	ZERO, SIGN_BIT

	movwtos	%o2, %f16
	fabss	%f1, %f14

	fcmps	%fcc3, %f14, %f16

	fmovsuge %fcc3, ZERO, %f16
	fands	%f1, SIGN_BIT, SIGN_BIT

	fors	%f16, SIGN_BIT, %f16
	fadds	%f1, %f16, %f5
	fsubs	%f5, %f16, %f0
	fabss	%f0, %f0
	fors	%f0, SIGN_BIT, %f0
	fstox	%f0, %f4
	movstouw %f4, %o0
	retl
	 movstouw %f5, %o1
END (__llrintf_vis3)
Commit	Line	Data
559398ab	1	/* llrintf(), sparc32 v9 vis3 version.
2b778ceb	2	Copyright (C) 2012-2021 Free Software Foundation, Inc.
559398ab	3	This file is part of the GNU C Library.
559398ab DM	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
5a82c748	17	<https://www.gnu.org/licenses/>. */
559398ab DM	18
	19	#include <sysdep.h>
	20
	21	/* VIS instructions are used to facilitate the formation of
	22	easier constants, and the propagation of the sign bit. */
	23
	24	#define TWO_TWENTYTHREE 0x4b000000 /* 2*23 /
	25
	26	#define ZERO %f10 /* 0.0 */
	27	#define SIGN_BIT %f12 /* -0.0 */
	28
	29	ENTRY (__llrintf_vis3)
	30	movwtos %o0, %f1
	31	sethi %hi(TWO_TWENTYTHREE), %o2
	32	fzeros ZERO
	33
	34	fnegs ZERO, SIGN_BIT
	35
	36	movwtos %o2, %f16
	37	fabss %f1, %f14
	38
	39	fcmps %fcc3, %f14, %f16
	40
	41	fmovsuge %fcc3, ZERO, %f16
	42	fands %f1, SIGN_BIT, SIGN_BIT
	43
	44	fors %f16, SIGN_BIT, %f16
	45	fadds %f1, %f16, %f5
	46	fsubs %f5, %f16, %f0
	47	fabss %f0, %f0
	48	fors %f0, SIGN_BIT, %f0
	49	fstox %f0, %f4
	50	movstouw %f4, %o0
	51	retl
	52	movstouw %f5, %o1
	53	END (__llrintf_vis3)