init.c

来自「5956497jamvm-1.4.2.rar jamvm程序」· C语言 代码 · 共 42 行

/*
 * Copyright (C) 2003, 2004, 2005 Robert Lougher <[e-mail]>.
 *
 * This file is part of JamVM.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2,
 * or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifdef __linux__
#include <fpu_control.h>
#endif

/* Change floating point precision to double (64-bit) from
 * the extended (80-bit) Linux default. */

void setDoublePrecision() {
#ifdef __linux__
    fpu_control_t cw;

    _FPU_GETCW(cw);
    cw &= ~_FPU_EXTENDED;
    cw |= _FPU_DOUBLE;
    _FPU_SETCW(cw);
#endif
}

void initialisePlatform() {
    setDoublePrecision();
}