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)
10              GETTER(allegro_errno, 0)
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DESCRIPTION

13       Some Allegro functions will set an error number as well as returning an
14       error code.  Call this function to retrieve the last error  number  set
15       for the calling thread.
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19Allegro reference manual                                       al_get_errno(3)