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      1 /*-
      2  * Copyright (c) 2004 David Schultz <das (at) 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 <sys/cdefs.h>
     28 __FBSDID("$FreeBSD$");
     29 
     30 #include <limits.h>
     31 #include <math.h>
     32 
     33 double
     34 scalbln (double x, long n)
     35 {
     36 	int in;
     37 
     38 	in = (int)n;
     39 	if (in != n) {
     40 		if (n > 0)
     41 			in = INT_MAX;
     42 		else
     43 			in = INT_MIN;
     44 	}
     45 	return (scalbn(x, in));
     46 }
     47 
     48 float
     49 scalblnf (float x, long n)
     50 {
     51 	int in;
     52 
     53 	in = (int)n;
     54 	if (in != n) {
     55 		if (n > 0)
     56 			in = INT_MAX;
     57 		else
     58 			in = INT_MIN;
     59 	}
     60 	return (scalbnf(x, in));
     61 }
     62 
     63 long double
     64 scalblnl (long double x, long n)
     65 {
     66 	int in;
     67 
     68 	in = (int)n;
     69 	if (in != n) {
     70 		if (n > 0)
     71 			in = INT_MAX;
     72 		else
     73 			in = INT_MIN;
     74 	}
     75 	return (scalbnl(x, (int)n));
     76 }
     77