added some code to format floating-point numbers

qse/include/qse/cmn/fmt.h

@@ -291,6 +291,14 @@ QSE_EXPORT int qse_fmtuintmaxtowcs (
 #	define qse_fmtuintmax(b,sz,v,bf,pr,fc,pf) qse_fmtuintmaxtowcs(b,sz,v,bf,pr,fc,pf)
 #endif
 
+QSE_EXPORT int qse_fmtfltmaxtombs (
+	qse_mchar_t* buf, 
+	qse_size_t   bufsize,
+	qse_fltmax_t f,
+	qse_mchar_t  point, 
+	int          digits
+);
+
 #ifdef __cplusplus
 }
 #endif

qse/include/qse/types.h

@@ -454,7 +454,7 @@ typedef qse_int_t qse_intptr_t;
 
 /** @typedef qse_flt_t
  * The qse_flt_t type defines the largest floating-pointer number type
- * supported.
+ * naturally supported.
  */
 #if defined(__FreeBSD__)
 	/* TODO: check if the support for long double is complete.
@@ -469,16 +469,17 @@ typedef qse_int_t qse_intptr_t;
 #	define QSE_SIZEOF_FLT_T QSE_SIZEOF_DOUBLE
 #endif
 
-/* TODO: qse_fltmax_t to include the quadruple precision floating-point type. 
- *
-#if QSE_SIZEOF___FLOAT128 > 0
+/** @typedef qse_fltmax_t
+ * The qse_fltmax_t type defines the largest floating-pointer number type
+ * ever supported.
+ */
+#if QSE_SIZEOF__FLOAT128 > QSE_SIZEOF_FLT_T
 	typedef __float128 qse_fltmax_t;
 #	define QSE_SIZEOF_FLTMAX_T QSE_SIZEOF___FLOAT128
 #else
 	typedef qse_flt_t qse_fltmax_t;
 #	define QSE_SIZEOF_FLTMAX_T QSE_SIZEOF_FLT_T
 #endif
- */
 
 /** 
  * The qse_mchar_t type defines a multi-byte character type.