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Current Path: /usr/src/lib/libc/aarch64/gen

usr / src / lib / libc / aarch64 / gen /

📁 ..
📄 Makefile.inc(232 B)
📄 _ctx_start.S(1.65 KB)
📄 _set_tp.c(1.56 KB)
📄 _setjmp.S(2.77 KB)
📄 fabs.S(1.42 KB)
📄 flt_rounds.c(1.72 KB)
📄 fpgetmask.c(1.74 KB)
📄 fpsetmask.c(1.86 KB)
📄 infinity.c(278 B)
📄 makecontext.c(2.55 KB)
📄 setjmp.S(3.14 KB)
📄 sigsetjmp.S(1.83 KB)

Editing: flt_rounds.c

/*-
 * Copyright (c) 2012 Ian Lepore <freebsd@damnhippie.dyndns.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/types.h>

#include <fenv.h>
#include <float.h>

static int map[] = {
	1,	/* round to nearest */
	2,	/* round to positive infinity */
	3,	/* round to negative infinity */
	0	/* round to zero */
};

int
__flt_rounds(void)
{
	uint64_t fpcr;

asm volatile("mrs	%0, fpcr" : "=r" (fpcr));
	return map[(fpcr >> 22) & 3];
}

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Editing: flt_rounds.c

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