Blame typemap

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#
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#  typemap -- XS type mappings not present in early perls
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#
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#
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#  Version 3.x, Copyright (C) 2004-2013, Marcus Holland-Moritz.
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#  Version 2.x, Copyright (C) 2001, Paul Marquess.
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#  Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
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#
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#  This program is free software; you can redistribute it and/or
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#  modify it under the same terms as Perl itself.
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#
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UV                      T_UV
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NV                      T_NV
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HV *                    T_HVREF
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STRLEN                  T_UV
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INPUT
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T_UV
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        $var = ($type)SvUV($arg)
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T_NV
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        $var = ($type)SvNV($arg)
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T_HVREF
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        if (SvROK($arg) && SvTYPE(SvRV($arg))==SVt_PVHV)
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            $var = (HV*)SvRV($arg);
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        else
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            Perl_croak(aTHX_ \"$var is not a hash reference\")
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OUTPUT
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T_UV
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        sv_setuv($arg, (UV)$var);
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T_NV
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        sv_setnv($arg, (NV)$var);