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sym_is_integer 

int sym_is_integer(sym_environment *env, int index, int *value)

Description:

This routine is used to ask whether the queried variable is integer.

Arguments:

sym_environment *env IN Pointer to the SYMPHONY environment.
int index IN Index of the queried variable. Note that, it has to be at most the number of columns.
int *value OUT Pointer to a boolean indicating the variable status.

Return values:

FUNCTION_TERMINATED_ABNORMALLY Function invoked unsuccessfully.
FUNCTION_TERMINATED_NORMALLY Function invoked successfully.