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1 // Copyright John Maddock 2007.
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2 // Use, modification and distribution are subject to the
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3 // Boost Software License, Version 1.0. (See accompanying file
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4 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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5
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6 #ifndef BOOST_MATH_MODF_HPP
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7 #define BOOST_MATH_MODF_HPP
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8
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9 #ifdef _MSC_VER
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10 #pragma once
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11 #endif
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12
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13 #include <boost/math/tools/config.hpp>
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14 #include <boost/math/special_functions/trunc.hpp>
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15
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16 namespace boost{ namespace math{
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17
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18 template <class T, class Policy>
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19 inline T modf(const T& v, T* ipart, const Policy& pol)
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20 {
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21 *ipart = trunc(v, pol);
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22 return v - *ipart;
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23 }
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24 template <class T>
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25 inline T modf(const T& v, T* ipart)
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26 {
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27 return modf(v, ipart, policies::policy<>());
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28 }
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29
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30 template <class T, class Policy>
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31 inline T modf(const T& v, int* ipart, const Policy& pol)
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32 {
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33 *ipart = itrunc(v, pol);
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34 return v - *ipart;
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35 }
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36 template <class T>
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37 inline T modf(const T& v, int* ipart)
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38 {
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39 return modf(v, ipart, policies::policy<>());
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40 }
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41
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42 template <class T, class Policy>
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43 inline T modf(const T& v, long* ipart, const Policy& pol)
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44 {
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45 *ipart = ltrunc(v, pol);
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46 return v - *ipart;
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47 }
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48 template <class T>
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49 inline T modf(const T& v, long* ipart)
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50 {
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51 return modf(v, ipart, policies::policy<>());
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52 }
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53
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54 #ifdef BOOST_HAS_LONG_LONG
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55 template <class T, class Policy>
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56 inline T modf(const T& v, boost::long_long_type* ipart, const Policy& pol)
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57 {
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58 *ipart = lltrunc(v, pol);
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59 return v - *ipart;
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60 }
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61 template <class T>
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62 inline T modf(const T& v, boost::long_long_type* ipart)
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63 {
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64 return modf(v, ipart, policies::policy<>());
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65 }
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66 #endif
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67
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68 }} // namespaces
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69
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70 #endif // BOOST_MATH_MODF_HPP
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