42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
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#!/usr/bin/env python3
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from sage.all import *
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from parameters import p, f
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if __name__ == '__main__':
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cof = (p+1)//(2**f)
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from cformat import Object, ObjectFormatter
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obj_cof = ObjectFormatter(
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[
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Object('digit_t[]', 'p_cofactor_for_2f', [cof]),
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]
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)
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with open("include/ec_params.h", "w") as hfile:
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with open("ec_params.c", "w") as cfile:
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hfile.write('#ifndef EC_PARAMS_H\n')
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hfile.write('#define EC_PARAMS_H\n')
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hfile.write('\n')
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hfile.write('#include <fp.h>\n')
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cfile.write('#include <ec_params.h>\n')
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hfile.write('\n')
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hfile.write(f'#define TORSION_EVEN_POWER {f}\n')
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hfile.write('\n')
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hfile.write('// p+1 divided by the power of 2\n')
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cfile.write('// p+1 divided by the power of 2\n')
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obj_cof.header(file=hfile)
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obj_cof.implementation(file=cfile)
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hfile.write(f'#define P_COFACTOR_FOR_2F_BITLENGTH {((p+1)//(2**f)).bit_length()}\n')
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hfile.write('\n')
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cfile.write('\n')
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hfile.write('#endif\n')
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