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: http://www.atnf.csiro.au/computing/software/casacore/casacore-1.2.0/doc/html/classcasa_1_1Conversion.html
Дата изменения: Unknown Дата индексирования: Mon Feb 14 21:33:38 2011 Кодировка: Поисковые слова: m 8 |
A class with general conversion definitions. More...
#include <Conversion.h>
Public Types | |
typedef unsigned int | ValueFunction (void *to, const void *from, unsigned int nvalues) |
Define the signature of a function converting nvalues values from internal to external format or vice-versa. | |
typedef void * | ByteFunction (void *to, const void *from, unsigned int nbytes) |
Define the signature of a function converting from one format to another providing the number of bytes. | |
Static Public Member Functions | |
static unsigned int | boolToBit (void *to, const void *from, unsigned int nvalues) |
Convert a stream of Bools to output format (as bits). | |
static void | boolToBit (void *to, const void *from, unsigned int startBit, unsigned int nvalues) |
static unsigned int | bitToBool (void *to, const void *from, unsigned int nvalues) |
Convert a stream of Bools to output format (as bits). | |
static void | bitToBool (void *to, const void *from, unsigned int startBit, unsigned int nvalues) |
static unsigned int | valueCopy (void *to, const void *from, unsigned int nbytes) |
Copy a value using memcpy. | |
static ByteFunction * | getmemcpy () |
Get a pointer to the memcpy function. | |
static void * | mymemcpy (void *to, const void *from, unsigned int nbytes) |
A placeholder for the ObjectCenter or DEC-alpha memcpy or 64bit SGI Also added this for HPUX11 (2b provided in the makedefs) (because they do not use an unsigned int for nbytes). |
A class with general conversion definitions.
Public interface
This class contains the general definitions for the Conversion classes.
Static functions in the classes CanonicalConversion , VAXConversion , and IBMConversion convert data from/to canonical, VAX, and IBM/360 format, resp.\.
Classes derived from DataConversion provide the same functionality in a polymorphic way.
This provides a common place for definitions used elsewhere. It also provides a uniform interface to memcpy.
Definition at line 84 of file Conversion.h.
typedef void* casa::Conversion::ByteFunction(void *to, const void *from, unsigned int nbytes) |
Define the signature of a function converting from one format to another providing the number of bytes.
It returns the to
pointer (similar to memcpy). (For example the byteTo/FromLocalXXX functions in class CanonicalConversion .
Definition at line 107 of file Conversion.h.
typedef unsigned int casa::Conversion::ValueFunction(void *to, const void *from, unsigned int nvalues) |
Define the signature of a function converting nvalues
values from internal to external format or vice-versa.
These functions are used in the IO framework , but are also used in the table system. Examples of such conversions are:
- local <-> canonical (when storing in canonical format)
- local <-> local (when storing in local format)
- binary <-> ASCII
It returns the number of bytes in external format. (For example the ToLocal/FromLocal functions in class CanonicalConversion return the number of bytes in canonical format).
Definition at line 99 of file Conversion.h.
static unsigned int casa::Conversion::bitToBool | ( | void * | to, | |
const void * | from, | |||
unsigned int | nvalues | |||
) | [static] |
Convert a stream of Bools to output format (as bits).
The variable startBit
(0-relative) indicates where to start in the from
buffer.
static void casa::Conversion::bitToBool | ( | void * | to, | |
const void * | from, | |||
unsigned int | startBit, | |||
unsigned int | nvalues | |||
) | [static] |
static void casa::Conversion::boolToBit | ( | void * | to, | |
const void * | from, | |||
unsigned int | startBit, | |||
unsigned int | nvalues | |||
) | [static] |
static unsigned int casa::Conversion::boolToBit | ( | void * | to, | |
const void * | from, | |||
unsigned int | nvalues | |||
) | [static] |
Convert a stream of Bools to output format (as bits).
The variable startBit
(0-relative) indicates where to start in the to
buffer.
Conversion::ByteFunction * casa::Conversion::getmemcpy | ( | ) | [inline, static] |
Get a pointer to the memcpy function.
Definition at line 150 of file Conversion.h.
static void* casa::Conversion::mymemcpy | ( | void * | to, | |
const void * | from, | |||
unsigned int | nbytes | |||
) | [static] |
A placeholder for the ObjectCenter or DEC-alpha memcpy or 64bit SGI Also added this for HPUX11 (2b provided in the makedefs) (because they do not use an unsigned int for nbytes).
static unsigned int casa::Conversion::valueCopy | ( | void * | to, | |
const void * | from, | |||
unsigned int | nbytes | |||
) | [static] |
Copy a value using memcpy.
It differs from memcpy in the return value.
Note: This version has the ValueFunction
signature, but it expects as input the number of bytes;