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       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 "cdefs-compat.h"
      28                 :             : //__FBSDID("$FreeBSD: src/lib/msun/src/s_scalbln.c,v 1.2 2005/03/07 04:57:50 das Exp $");
      29                 :             : 
      30                 :             : #include <limits.h>
      31                 :             : #include <openlibm_math.h>
      32                 :             : 
      33                 :             : #include "math_private.h"
      34                 :             : 
      35                 :             : OLM_DLLEXPORT double
      36                 :           8 : scalbln (double x, long n)
      37                 :             : {
      38                 :             :         int in;
      39                 :             : 
      40                 :           8 :         in = (int)n;
      41         [ -  + ]:           8 :         if (in != n) {
      42         [ #  # ]:           0 :                 if (n > 0)
      43                 :           0 :                         in = INT_MAX;
      44                 :             :                 else
      45                 :           0 :                         in = INT_MIN;
      46                 :             :         }
      47                 :           8 :         return (scalbn(x, in));
      48                 :             : }
      49                 :             : 
      50                 :             : OLM_DLLEXPORT float
      51                 :           8 : scalblnf (float x, long n)
      52                 :             : {
      53                 :             :         int in;
      54                 :             : 
      55                 :           8 :         in = (int)n;
      56         [ -  + ]:           8 :         if (in != n) {
      57         [ #  # ]:           0 :                 if (n > 0)
      58                 :           0 :                         in = INT_MAX;
      59                 :             :                 else
      60                 :           0 :                         in = INT_MIN;
      61                 :             :         }
      62                 :           8 :         return (scalbnf(x, in));
      63                 :             : }
      64                 :             : 
      65                 :             : #ifdef OLM_LONG_DOUBLE
      66                 :             : OLM_DLLEXPORT long double
      67                 :           0 : scalblnl (long double x, long n)
      68                 :             : {
      69                 :             :         int in;
      70                 :             : 
      71                 :           0 :         in = (int)n;
      72         [ #  # ]:           0 :         if (in != n) {
      73         [ #  # ]:           0 :                 if (n > 0)
      74                 :           0 :                         in = INT_MAX;
      75                 :             :                 else
      76                 :           0 :                         in = INT_MIN;
      77                 :             :         }
      78                 :           0 :         return (scalbnl(x, (int)n));
      79                 :             : }
      80                 :             : #endif