lib/libc/quad/fixsfdi.c

   1 /*-
   2  * Copyright (c) 1992 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * This software was developed by the Computer Systems Engineering group
   6  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
   7  * contributed to Berkeley.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)fixsfdi.c        5.1 (Berkeley) 7/7/92
  34  * $FreeBSD: src/lib/libc/quad/fixsfdi.c,v 1.3 2007/01/09 00:28:03 imp Exp $
  35  */
  36
  37 #include "quad.h"
  38
  39 /*
  40  * Convert float to (signed) quad.
  41  * We clamp anything that is out of range.
  42  *
  43  * N.B.: must use new ANSI syntax (sorry).
  44  */
  45 long long
  46 __fixsfdi(float x)
  47 {
  48         if (x < 0)
  49                 if (x <= QUAD_MIN)
  50                         return (QUAD_MIN);
  51                 else
  52                         return ((quad_t)-(u_quad_t)-x);
  53         else
  54                 if (x >= QUAD_MAX)
  55                         return (QUAD_MAX);
  56                 else
  57                         return ((quad_t)(u_quad_t)x);
  58 }