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XS::APItest

Perl 5 version 8.8 documentation
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XS::APItest

NAME

XS::APItest - Test the perl C API

SYNOPSIS

  1.   use XS::APItest;
  2.   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.

    1.   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").

    1.   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 .

    1.   print_long_double() if have_long_double;
  • print_nv

    Test that an NV is formatted correctly by printf.

    1.   print_nv( $val );

    Output is sent to STDOUT.

  • print_iv

    Test that an IV is formatted correctly by printf.

    1.   print_iv( $val );

    Output is sent to STDOUT.

  • print_uv

    Test that an UV is formatted correctly by printf.

    1.   print_uv( $val );

    Output is sent to STDOUT.

  • print_int

    Test that an int is formatted correctly by printf.

    1.   print_int( $val );

    Output is sent to STDOUT.

  • print_long

    Test that an long is formatted correctly by printf.

    1.   print_long( $val );

    Output is sent to STDOUT.

  • print_float

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

    1.   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

    1.     call_sv( sub { @_, 'c' }, G_ARRAY,  'a', 'b'); # returns 'a', 'b', 'c', 3
    2.     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.

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