diff options
| -rw-r--r-- | Doc/library/sys.rst | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst index d54ecd7..428ce51 100644 --- a/Doc/library/sys.rst +++ b/Doc/library/sys.rst @@ -604,12 +604,18 @@ always available. +---------------------+----------------+--------------------------------------------------+ | :const:`radix` | FLT_RADIX | radix of exponent representation | +---------------------+----------------+--------------------------------------------------+ - | :const:`rounds` | FLT_ROUNDS | integer constant representing the rounding mode | - | | | used for arithmetic operations. This reflects | - | | | the value of the system FLT_ROUNDS macro at | - | | | interpreter startup time. See section 5.2.4.2.2 | - | | | of the C99 standard for an explanation of the | - | | | possible values and their meanings. | + | :const:`rounds` | FLT_ROUNDS | integer representing the rounding mode for | + | | | floating-point arithmetic. This reflects the | + | | | value of the system FLT_ROUNDS macro at | + | | | interpreter startup time: | + | | | ``-1`` indeterminable, | + | | | ``0`` toward zero, | + | | | ``1`` to nearest, | + | | | ``2`` toward positive infinity, | + | | | ``3`` toward negative infinity | + | | | | + | | | All other values for FLT_ROUNDS characterize | + | | | implementation-defined rounding behavior. | +---------------------+----------------+--------------------------------------------------+ The attribute :attr:`sys.float_info.dig` needs further explanation. If |