mirror of https://github.com/YosysHQ/icestorm.git
45 lines
1.7 KiB
Python
45 lines
1.7 KiB
Python
# Test case for `icebox_asc2hlc' and `icebox_hlc2asc': Does conversion
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# from LUT strings to logic expressions and back work correctly?
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# Copyright (C) 2017 Roland Lutz
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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import sys
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import icebox
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from icebox_asc2hlc import lut_to_logic_expression
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from icebox_hlc2asc import logic_expression_to_lut
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def main():
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sys.stderr.write("testing conversion from LUT strings "
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"to logic expressions and back")
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for i in range(65536):
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if i % 4096 == 0:
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sys.stderr.write(".")
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sys.stderr.flush()
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lut = bin(i)[2:].zfill(16)
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s = lut_to_logic_expression(lut, ('a', 'b', 'c', 'd'))
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l = logic_expression_to_lut(s, ('a', 'b', 'c', 'd'))
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if l != lut:
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sys.stderr.write("\nERROR at LUT = %s\n" % lut)
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sys.stderr.write("stringified = %s\n" % s)
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sys.stderr.write("resulting LUT = %s\n" % l)
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sys.exit(1)
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sys.stderr.write("\n")
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if __name__ == '__main__':
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main()
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