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Diffstat (limited to 'nuttx/Documentation/NuttxPortingGuide.html')
| -rw-r--r-- | nuttx/Documentation/NuttxPortingGuide.html | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/nuttx/Documentation/NuttxPortingGuide.html b/nuttx/Documentation/NuttxPortingGuide.html index dd9d66881..a2c58b41f 100644 --- a/nuttx/Documentation/NuttxPortingGuide.html +++ b/nuttx/Documentation/NuttxPortingGuide.html @@ -12,7 +12,7 @@ <h1><big><font color="#3c34ec"> <i>NuttX RTOS Porting Guide</i> </font></big></h1> - <p>Last Updated: October 29, 2012</p> + <p>Last Updated: October 30, 2012</p> </td> </tr> </table> @@ -4580,6 +4580,14 @@ build So for the architectures that define <code>CONFIG_ARCH_MATH_H=y</code>, <code>include/math.h</code> will be the redirecting <code>math.h</code> header file; for the architectures that don't select <code>CONFIG_ARCH_MATH_H</code>, the redirecting <code>math.h</code> header file will stay out-of-the-way in <code>include/nuttx/</code>. </p> </li> + <li><b><code>CONFIG_ARCH_FLOAT_H</code></b>. + <p> + If you enable the generic, built-in math library, then that math library will expect your toolchain to provide the standard <code>float.h</code> header file. + The <code>float.h</code> header file defines the properties of your floating point implementation. + It would always be best to use your toolchain's <code>float.h</code> header file but if none is avaiable, a default <code>float.h</code> header file will provided if this option is selected. + However, there is no assurance that the settings in this float.h are actually correct for your platform! + </p> + </li> <li><b><code>CONFIG_ARCH_STDARG_H</code></b>. <p> There is also a redirecting version of <code>stdarg.h</code> in the source tree as well. |