s_fdim.c - vx32 - Local 9vx git repository for patches.
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       ---
       s_fdim.c (1616B)
       ---
            1 /*-
            2  * Copyright (c) 2004 David Schultz <das@FreeBSD.ORG>
            3  * All rights reserved.
            4  *
            5  * Redistribution and use in source and binary forms, with or without
            6  * modification, are permitted provided that the following conditions
            7  * are met:
            8  * 1. Redistributions of source code must retain the above copyright
            9  *    notice, this list of conditions and the following disclaimer.
           10  * 2. Redistributions in binary form must reproduce the above copyright
           11  *    notice, this list of conditions and the following disclaimer in the
           12  *    documentation and/or other materials provided with the distribution.
           13  *
           14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
           15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
           16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
           17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
           18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
           19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
           20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
           21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
           22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
           23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
           24  * SUCH DAMAGE.
           25  */
           26 
           27 #include <math.h>
           28 
           29 #define        DECL(type, fn)                        \
           30 type                                        \
           31 fn(type x, type y)                        \
           32 {                                        \
           33                                         \
           34         if (isnan(x))                        \
           35                 return (x);                \
           36         if (isnan(y))                        \
           37                 return (y);                \
           38         return (x > y ? x - y : 0.0);        \
           39 }
           40 
           41 DECL(double, fdim)
           42 DECL(float, fdimf)
           43