1al_get_errno(3)                                                al_get_errno(3)
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NAME

6       al_get_errno - Allegro 5 API
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SYNOPSIS

9              int al_get_errno(void)
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DESCRIPTION

12       Some Allegro functions will set an error number as well as returning an
13       error code.  Call this function to retrieve the last error  number  set
14       for the calling thread.
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18Allegro reference manual                                       al_get_errno(3)