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41 lines
629 B
Plaintext
41 lines
629 B
Plaintext
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"Asm.fif" include
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PROGRAM{
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NEWPROC add
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NEWPROC sub
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NEWPROC mul
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sub <{ s3 s3 XCHG2 SUB s2 XCHG0 SUB }>s PROC
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// compute (5+i)^4 * (239-i)
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main PROC:<{
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5 INT 1 INT // 5+i
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2DUP
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mul CALL
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2DUP
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mul CALL
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239 INT -1 INT
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mul JMP
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}>
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add PROC:<{
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s1 s2 XCHG
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ADD -ROT ADD SWAP
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}>
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// a b c d -- ac-bd ad+bc : complex number multiplication
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mul PROC:<{
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s3 s1 PUSH2 // a b c d a c
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MUL // a b c d ac
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s3 s1 PUSH2 // a b c d ac b d
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MUL // a b c d ac bd
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SUB // a b c d ac-bd
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s4 s4 XCHG2 // ac-bd b c a d
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MUL // ac-bd b c ad
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-ROT MUL ADD
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}>
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}END>s
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dup csr. runvmdict .s
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