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34 lines
1004 B
34 lines
1004 B
import sys
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#
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# This is only a demo based on the GMP library.
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# There is a rather more complete (but perhaps outdated) version available at:
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# http://bazaar.launchpad.net/~tolot-solar-empire/+junk/gmpy_cffi/files
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#
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try:
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from _gmp_cffi import ffi, lib
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except ImportError:
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print 'run gmp_build first, then make sure the shared object is on sys.path'
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sys.exit(1)
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# ffi "knows" about the declared variables and functions from the
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# cdef parts of the module created from gmp_build
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# lib "knows" how to call the functions from the set_source parts
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# of the module.
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# ____________________________________________________________
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a = ffi.new("mpz_t")
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b = ffi.new("mpz_t")
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if len(sys.argv) < 3:
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print 'call as %s bigint1, bigint2' % sys.argv[0]
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sys.exit(2)
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lib.mpz_init_set_str(a, sys.argv[1], 10) # Assume decimal integers
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lib.mpz_init_set_str(b, sys.argv[2], 10) # Assume decimal integers
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lib.mpz_add(a, a, b) # a=a+b
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s = lib.mpz_get_str(ffi.NULL, 10, a)
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print ffi.string(s)
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