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test: add configuration tests and fix bugs

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The two new configuation tests, fixed.dfa and float-fixed.dfa verify
that the 'standard' configuration of libpng works without floating point
arithmetic.

Signed-off-by: John Bowler <jbowler@acm.org>
This commit is contained in:
John Bowler
2025-01-27 10:51:01 -08:00
parent a8242dd947
commit c4b20d0a3a
3 changed files with 53 additions and 0 deletions
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15
contrib/conftest/fixed.dfa Normal file
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# fixed.dfa
# Build time configuration of libpng
#
# Author: John Bowler
# Copyright: (c) John Bowler, 2025
# Usage rights:
# To the extent possible under law, the author has waived all copyright and
# related or neighboring rights to this work. This work is published from:
# United States.
#
# Test the standard libpng configuration without floating point (the internal
# fixed point implementations are used instead).
#
option FLOATING_ARITHMETIC off
option FLOATING_POINT off

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contrib/conftest/float-fixed.dfa Normal file
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# fixed-float.dfa
# Build time configuration of libpng
#
# Author: John Bowler
# Copyright: (c) John Bowler, 2025
# Usage rights:
# To the extent possible under law, the author has waived all copyright and
# related or neighboring rights to this work. This work is published from:
# United States.
#
# Test the standard libpng configuration with the fixed point internal
# implementation in place of the default floating point
#
option FLOATING_ARITHMETIC off