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XS::APItest(3pm)                      Perl Programmers Reference Guide                      XS::APItest(3pm)



NAME
       XS::APItest - Test the perl C API

SYNOPSIS
         use XS::APItest;
         print_double(4);

ABSTRACT
       This module tests the perl C API. Currently tests that "printf" works correctly.

DESCRIPTION
       This module can be used to check that the perl C API is behaving correctly. This module provides test
       functions and an associated test script that verifies the output.

       This module is not meant to be installed.

   EXPORT
       Exports all the test functions:

       print_double
           Test that a double-precision floating point number is formatted correctly by "printf".

             print_double( $val );

           Output is sent to STDOUT.

       print_long_double
           Test that a "long double" is formatted correctly by "printf". Takes no arguments - the test value
           is hard-wired into the function (as "7").

             print_long_double();

           Output is sent to STDOUT.

       have_long_double
           Determine whether a "long double" is supported by Perl.  This should be used to determine whether
           to test "print_long_double".

             print_long_double() if have_long_double;

       print_nv
           Test that an "NV" is formatted correctly by "printf".

             print_nv( $val );

           Output is sent to STDOUT.

       print_iv
           Test that an "IV" is formatted correctly by "printf".

             print_iv( $val );

           Output is sent to STDOUT.

       print_uv
           Test that an "UV" is formatted correctly by "printf".

             print_uv( $val );

           Output is sent to STDOUT.

       print_int
           Test that an "int" is formatted correctly by "printf".

             print_int( $val );

           Output is sent to STDOUT.

       print_long
           Test that an "long" is formatted correctly by "printf".

             print_long( $val );

           Output is sent to STDOUT.

       print_float
           Test that a single-precision floating point number is formatted correctly by "printf".

             print_float( $val );

           Output is sent to STDOUT.

       call_sv, call_pv, call_method
           These exercise the C calls of the same names. Everything after the flags arg is passed as the the
           args to the called function. They return whatever the C function itself pushed onto the stack,
           plus the return value from the function; for example

               call_sv( sub { @_, 'c' }, G_ARRAY,  'a', 'b'); # returns 'a', 'b', 'c', 3
               call_sv( sub { @_ },      G_SCALAR, 'a', 'b'); # returns 'b', 1

       eval_sv
           Evaluates the passed SV. Result handling is done the same as for "call_sv()" etc.

       eval_pv
           Exercises the C function of the same name in scalar context. Returns the same SV that the C
           function returns.

       require_pv
           Exercises the C function of the same name. Returns nothing.

SEE ALSO
       XS::Typemap, perlapi.

AUTHORS
       Tim Jenness, <t.jenness@jach.hawaii.edu>, Christian Soeller, <csoelle@mph.auckland.ac.nz>, Hugo van
       der Sanden <hv@crypt.compulink.co.uk>

COPYRIGHT AND LICENSE
       Copyright (C) 2002,2004 Tim Jenness, Christian Soeller, Hugo van der Sanden.  All Rights Reserved.

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.



perl v5.12.5                                     2012-11-03                                 XS::APItest(3pm)