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
