ceph/src/boost/libs/math/include/boost/math/special_functions/modf.hpp

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