4 files changed, 83 insertions, 1 deletions
diff --git a/nuttx/include/cxx/cmath b/nuttx/include/cxx/cmath
index 7cb3a2109..b30d5548b 100644
--- a/nuttx/include/cxx/cmath
+++ b/nuttx/include/cxx/cmath
@@ -40,6 +40,9 @@
 // Included Files
 //***************************************************************************
 
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
 #include <math.h>
 
 //***************************************************************************
@@ -48,6 +51,34 @@
 
 namespace std
 {
+#if CONFIG_HAVE_FLOAT
+  using ::acosf;
+  using ::asinf;
+  using ::atanf;
+  using ::atan2f;
+  using ::ceilf;
+  using ::cosf;
+  using ::coshf;
+  using ::expf;
+  using ::fabsf;
+  using ::floorf;
+  using ::fmodf;
+  using ::frexpf;
+  using ::ldexpf;
+  using ::logf;
+  using ::log10f;
+  using ::log2f;
+  using ::modff;
+  using ::roundf;
+  using ::powf;
+  using ::sinf;
+  using ::sinhf;
+  using ::sqrtf;
+  using ::tanf;
+  using ::tanhf;
+#endif
+
+#if CONFIG_HAVE_DOUBLE
   using ::acos;
   using ::asin;
   using ::atan;
@@ -63,13 +94,44 @@ namespace std
   using ::ldexp;
   using ::log;
   using ::log10;
+  using ::log2;
   using ::modf;
+  using ::round;
   using ::pow;
   using ::sin;
   using ::sinh;
   using ::sqrt;
   using ::tan;
   using ::tanh;
+#endif
+
+#ifdef CONFIG_HAVE_LONG_DOUBLE
+  using ::acosl;
+  using ::asinl;
+  using ::atanl;
+  using ::atan2l;
+  using ::ceill;
+  using ::cosl;
+  using ::coshl;
+  using ::expl;
+  using ::fabsl;
+  using ::floorl;
+  using ::fmodl;
+  using ::frexpl;
+  using ::ldexpl;
+  using ::logl;
+  using ::log10l;
+  using ::log2l;
+  using ::modfl;
+  using ::roundl;
+  using ::powl;
+  using ::sinl;
+  using ::sinhl;
+  using ::sqrtl;
+  using ::tanl;
+  using ::tanhl;
+#endif
+
 }
 
 #endif // __INCLUDE_CXX_CMATH
diff --git a/nuttx/include/cxx/cstdbool b/nuttx/include/cxx/cstdbool
index d2f0639d2..192fde490 100644
--- a/nuttx/include/cxx/cstdbool
+++ b/nuttx/include/cxx/cstdbool
@@ -46,4 +46,13 @@
 // Namespace
 //***************************************************************************
 
+//***************************************************************************
+// Namespace
+//***************************************************************************
+
+namespace std
+{
+  using ::_Bool8;
+}
+
 #endif // __INCLUDE_CXX_CSTDBOOL
diff --git a/nuttx/include/cxx/cstdio b/nuttx/include/cxx/cstdio
index 900d429cb..6a9620e1a 100644
--- a/nuttx/include/cxx/cstdio
+++ b/nuttx/include/cxx/cstdio
@@ -52,6 +52,8 @@ namespace std
   using ::FILE;
   using ::fpos_t;
   using ::size_t;
+
+  using ::clearerr;
   using ::fclose;
   using ::fflush;
   using ::feof;
@@ -69,16 +71,24 @@ namespace std
   using ::ftell;
   using ::fwrite;
   using ::gets;
+  using ::ungetc;
+
   using ::printf;
   using ::puts;
   using ::rename;
   using ::sprintf;
+  using ::asprintf;
   using ::snprintf;
-  using ::ungetc;
+  using ::sscanf;
+  using ::perror;
+
   using ::vprintf;
   using ::vfprintf;
   using ::vsprintf;
+  using ::avsprintf;
   using ::vsnprintf;
+  using ::vsscanf;
+
   using ::fdopen;
   using ::statfs;
 }
diff --git a/nuttx/include/cxx/cstdlib b/nuttx/include/cxx/cstdlib
index 522f3fdb1..1bf8ed9da 100644
--- a/nuttx/include/cxx/cstdlib
+++ b/nuttx/include/cxx/cstdlib
@@ -70,6 +70,7 @@ namespace std
 #endif
 
   using ::strtol;
+  using ::strtoul;
   using ::strtod;
 
   using ::malloc;