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-rw-r--r--nuttx/configs/README.txt9
1 files changed, 9 insertions, 0 deletions
diff --git a/nuttx/configs/README.txt b/nuttx/configs/README.txt
index 0849837c1..cca4d7f32 100644
--- a/nuttx/configs/README.txt
+++ b/nuttx/configs/README.txt
@@ -723,6 +723,15 @@ defconfig -- This is a configuration file similar to the Linux
don't select CONFIG_ARCH_MATH_H, the redirecting math.h header file will
stay out-of-the-way in include/nuttx/.
+ CONFIG_ARCH_FLOAT_H
+ If you enable the generic, built-in math library, then that math library
+ will expect your toolchain to provide the standard float.h header file.
+ The float.h header file defines the properties of your floating point
+ implementation. It would always be best to use your toolchain's float.h
+ header file but if none is avaiable, a default float.h 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!
+
CONFIG_ARCH_STDARG_H - There is also a redirecting version of stdarg.h in
the source tree as well. It also resides out-of-the-way at include/nuttx/stdarg.h.
This is because you should normally use your toolchain's stdarg.h file. But