[Boost-commit] svn:boost r83673 - sandbox/precision/libs/precision/doc

Subject: [Boost-commit] svn:boost r83673 - sandbox/precision/libs/precision/doc
From: e_float_at_[hidden]
Date: 2013-04-01 05:47:55

Author: christopher_kormanyos
Date: 2013-04-01 05:47:54 EDT (Mon, 01 Apr 2013)
New Revision: 83673
URL: http://svn.boost.org/trac/boost/changeset/83673

Log:
Added additional potential embedded extensions more clearly including float8_t, float24_t. Made something plural in a sensible way.
Text files modified: 
   sandbox/precision/libs/precision/doc/precision.qbk |    23 ++++++++++++++++++++++-                 
   1 files changed, 22 insertions(+), 1 deletions(-)

Modified: sandbox/precision/libs/precision/doc/precision.qbk
==============================================================================
--- sandbox/precision/libs/precision/doc/precision.qbk	(original)
+++ sandbox/precision/libs/precision/doc/precision.qbk	2013-04-01 05:47:54 EDT (Mon, 01 Apr 2013)
@@ -75,7 +75,7 @@
 
 [*New C-style macros to facilitate initialization]
 of the optional floating-point `typedef`s having specified widths
-from a floating-point literal constant are proposed.
+from floating-point literal constants are proposed.
 
 It is not proposed to make any mandatory changes to `<cmath>`,
 special functions, `<limits>`, or `<complex>`.
@@ -561,6 +561,27 @@
 three-quarter precision floating-point, the layout of which should
 adhere to the method of precision extension specified in __IEEE_floating_point.
 
+Some embedded graphics systems use an 8-bit floating-point
+representation, primarily for storage of pixel information.
+Here, an extension of the optional floating-point `typedef`s with specified widths
+could include `float8_t`. This would be equivalent to
+one-quarter precision floating-point, the layout of which should
+adhere to the method of precision extension specified in __IEEE_floating_point.
+
+These potential embedded extensions for cost-sensitive microcontroller platforms
+are shown in the code sample below
+
+  // Potential embedded extensions.
+
+  namespace std
+  {
+    typedef floating-point type float8_t;    // optional.
+    typedef floating-point type float16_t;   // optional.
+    typedef floating-point type float24_t;   // optional.
+    typedef float               float32_t;   // optional.
+  }
+
+
 [endsect] [/section:lowerprecision Extending to lower precision]
 
 [section:context The context among existing implementations]