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f - ARM Compiler toolchain ARM C and C++ Libraries and Floating-Point Support Reference
The C and C++ libraries
ARM Compiler toolchain ARM C and C++ Libraries and Floating-Point Support Reference Version 5.01
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This is the standard C library system() function
int system(const char *string);
The default implementation of this function uses semihosting.
system() passes the string pointed to
by string to the host environment to
be executed by a command processor in an implementation-defined
manner. A null pointer can be used for string, to
inquire whether a command processor exists.
If the argument is a null pointer, the system function returns
nonzero only if a command processor is available.
If the argument is not a null pointer, the system() function
returns an implementation-defined value.
Using ARM® C
and C++ Libraries and Floating-Point Support: