1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Floating-point Types</title> 5<link rel="stylesheet" href="../../multiprecision.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../index.html" title="Chapter 1. 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Boost licence. 124 </p> 125 </td> 126<td> 127 <p> 128 Approximately 2x slower than the <a href="http://www.mpfr.org" target="_top">MPFR</a> 129 or <a href="http://gmplib.org" target="_top">GMP</a> libraries. 130 </p> 131 </td> 132</tr> 133<tr> 134<td> 135 <p> 136 <code class="computeroutput"><span class="identifier">cpp_dec_float</span><span class="special"><</span><span class="identifier">N</span><span class="special">></span></code> 137 </p> 138 </td> 139<td> 140 <p> 141 boost/multiprecision/cpp_dec_float.hpp 142 </p> 143 </td> 144<td> 145 <p> 146 10 147 </p> 148 </td> 149<td> 150 <p> 151 None 152 </p> 153 </td> 154<td> 155 <p> 156 Header only, all C++ implementation. Boost licence. 157 </p> 158 </td> 159<td> 160 <p> 161 Approximately 2x slower than the <a href="http://www.mpfr.org" target="_top">MPFR</a> 162 or <a href="http://gmplib.org" target="_top">GMP</a> libraries. 163 </p> 164 </td> 165</tr> 166<tr> 167<td> 168 <p> 169 <code class="computeroutput"><span class="identifier">mpf_float</span><span class="special"><</span><span class="identifier">N</span><span class="special">></span></code> 170 </p> 171 </td> 172<td> 173 <p> 174 boost/multiprecision/gmp.hpp 175 </p> 176 </td> 177<td> 178 <p> 179 2 180 </p> 181 </td> 182<td> 183 <p> 184 <a href="http://gmplib.org" target="_top">GMP</a> 185 </p> 186 </td> 187<td> 188 <p> 189 Very fast and efficient back-end. 190 </p> 191 </td> 192<td> 193 <p> 194 Dependency on GNU licensed <a href="http://gmplib.org" target="_top">GMP</a> 195 library. 196 </p> 197 </td> 198</tr> 199<tr> 200<td> 201 <p> 202 <code class="computeroutput"><span class="identifier">mpfr_float</span><span class="special"><</span><span class="identifier">N</span><span class="special">></span></code> 203 </p> 204 </td> 205<td> 206 <p> 207 boost/multiprecision/mpfr.hpp 208 </p> 209 </td> 210<td> 211 <p> 212 2 213 </p> 214 </td> 215<td> 216 <p> 217 <a href="http://gmplib.org" target="_top">GMP</a> and <a href="http://www.mpfr.org" target="_top">MPFR</a> 218 </p> 219 </td> 220<td> 221 <p> 222 Very fast and efficient back-end, with its own standard library 223 implementation. 224 </p> 225 </td> 226<td> 227 <p> 228 Dependency on GNU licensed <a href="http://gmplib.org" target="_top">GMP</a> 229 and <a href="http://www.mpfr.org" target="_top">MPFR</a> libraries. 230 </p> 231 </td> 232</tr> 233<tr> 234<td> 235 <p> 236 <code class="computeroutput"><span class="identifier">float128</span></code> 237 </p> 238 </td> 239<td> 240 <p> 241 boost/multiprecision/float128.hpp 242 </p> 243 </td> 244<td> 245 <p> 246 2 247 </p> 248 </td> 249<td> 250 <p> 251 Either <a href="http://gcc.gnu.org/onlinedocs/libquadmath/" target="_top">libquadmath</a> 252 or the Intel C++ Math library. 253 </p> 254 </td> 255<td> 256 <p> 257 Very fast and efficient back-end for 128-bit floating-point values 258 (113-bit mantissa, equivalent to FORTRAN's QUAD real) 259 </p> 260 </td> 261<td> 262 <p> 263 Depends on the compiler being either recent GCC or Intel C++ versions. 264 </p> 265 </td> 266</tr> 267</tbody> 268</table></div> 269</div> 270<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 271<td align="left"></td> 272<td align="right"><div class="copyright-footer">Copyright © 2002-2020 John 273 Maddock and Christopher Kormanyos<p> 274 Distributed under the Boost Software License, Version 1.0. (See accompanying 275 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 276 </p> 277</div></td> 278</tr></table> 279<hr> 280<div class="spirit-nav"> 281<a accesskey="p" href="ints/egs/bitops.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../tut.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="floats/cpp_bin_float.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 282</div> 283</body> 284</html> 285
