HP OpenVMS RTL Library (LIB$) Manual
The maximum representable floating-point values (max_float) for the
IEEE_S_Floating, IEEE_T_Floating, IEEE_X_Floating,
Big_Endian_IEEE_S_Floating, Big_Endian_IEEE_T_Floating, and
Big_Endian_IEEE_X_Floating formats are:
| Data Type |
Value for: max_float |
|
S
|
Decimal: 3.402823e38
|
|
T
|
Decimal: 1.797693134862316e308
|
|
X
|
Decimal: 1.189731495357231765085759326628007016196477e4932
|
Declarations for the options argument are in the $CVTDEF module found
in the system symbol libraries.
Description
CVT$FTOF functionality is available on all HP platforms and is the
floating-point conversion routine of choice for portability. When
compared with the standard CVT$CONVERT_FLOAT routine, CVT$FTOF includes
additional functionality and increased performance.
CVT$FTOF is a general-purpose floating-point conversion routine that
converts any input_type_code floating-point data type
into any output_type_code floating-point data type.
The conversion is subject to the options specified in the
options argument.
Note
OpenVMS compilers do not support arithmetic operations for all of the
floating-point data types described here. Additional floating-point
data types are supported by this routine for data conversion purposes
only.
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