Library functions (j.3.12) – Echelon Neuron C User Manual
Page 257
Neuron C Programmer’s Guide
245
the directories specified in Include Directories of the NodeBuilder Device
Templates Properties dialog and Project Properties dialog.
When working from within the NodeBuilder Project Manager, or from the
command line but through the NodeBuilder Project Make Utility, the
current
working directory
is the folder that contains the main Neuron C source file.
The bracketed form shown below:
#include
searches the include subdirectory within the
standard files directory
for system
include files (such as
specified by the bracketed form is unaffected by the directories specified in
Include Directories of the NodeBuilder's properties dialogs.)
Q: What is the support of quoted names for includable source files? (Sec. 6.10..2)
A:
The quoted names in the #include directive can be any valid filename under
the Windows operating system, with absolute, drive-relative, or relative
pathname, if any. Pathnames can be relative to the current working directory, or
relative to any of the directories on the include file search path.
When working from within the NodeBuilder Project Manager, or from the
command line but through the NodeBuilder Project Make Utility, the
current
working directory
is the folder that contains the main Neuron C source file.
Q: What is the mapping of source file character sequences in the #include
directive? (Sec. 6.10.2)
A:
The source file character sequences can be upper or lower case. Any valid
filename character can be used. Case is not significant.
Q: What is the behavior of each recognized
#pragma
directive? (Sec. 6.10.6)
A:
The #pragma directives are documented in the
Compiler Directives
chapter of
the
Neuron C Reference Guide
.
Q: What are the definitions for __DATE__ and __TIME__ when respectively, the
date and time of the translation are not available? (Sec. 6.10.8)
A:
Neuron C does not support the __DATE__ and __TIME__ macros.
Library Functions (J.3.12)
Q: What is the NULL pointer constant to which the macro NULL expands? (Sec.
7.17)
A:
The NULL pointer constant is defined to be 0 in the
Neuron C is, generally, a “freestanding implementation.” This means that
Neuron C does not include a full Standard C library as part of the
implementation. However, some Standard C functions are available. There are
some string functions, and memory functions, such as strcpy( ) and memcmp( ).
Consult the
Functions
chapter of the
Neuron C Reference Guide
for more
information on the functions supported.