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Simple data types used by the WFDB library are defined in ‘<wfdb/wfdb.h>’. These include:
a signed integer type (at least 16 bits) used to represent sample values, in units of adus.
a signed integer type (at least 32 bits) used to represent times and
time intervals, in units of sample intervals. Only the magnitude is
significant; the sign of a
WFDB_Time variable indicates how it
is to be printed by
a signed integer type (at least 32 bits) used to represent Julian dates, in units of days.
a floating point type used to represent sampling and counter frequencies, in units of Hz.
a floating point type used to represent signal gains, in units of adus per physical unit.
an unsigned integer type used to represent signal group numbers.
an unsigned integer type used to represent signal numbers.
an unsigned integer type used to represent annotator numbers.
Composite data types used by the WFDB library are also defined in ‘<wfdb/wfdb.h>’. These types, described in detail in the following sections, include:
an object containing the name and global attributes of a given signal.
an object containing calibration specifications for signals of a given type.
an object containing the name and attributes of a given annotator.
an object describing one or more attributes of one or more signals at a given time.
|3.1 Signal Information Structures||Signal names and attributes.|
|3.2 Calibration Information Structures||Signal calibration specifications.|
|3.3 Annotator Information Structures||Annotator names and file types.|
|3.4 Annotation Structures||Annotation contents.|
|3.5 Segment Information Structures||Segment information.|
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George B. Moody (firstname.lastname@example.org)