is_errno

get the current error code

SYNOPSIS

int * is_errno( int isfd );

isfd isam file identifier

RETURN

a pointer to the base file descriptor iserrno field, giving the current error code, as detailed in Error Codes, or NULL on error.

NOTES

if isfd is NULL - for instance when an isOpen or isBuild call fails - then the current value of the global errno value is returned.

PLEASE NOTE that this call is currently deprecated and will probably be replaced with one that returns the value itself, and not a pointer.