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5仿真币
to setup
8 e H" ~! @% ^. U# H clear-all
/ C8 i4 ?, {& q% Q& n crt 5
7 j3 E; t9 G+ m# V absolute-value 10
5 R6 ^, I6 m, R$ y* O9 E0 _" M; nend$ |1 N9 p+ X$ d, w4 \* B9 a+ f
to-report absolute-value [ number ]
% L! v% q$ X8 k! e# g) a ifelse number >= 0 [report number] [report (- number)]
/ q8 t* P% c: s6 g* Z; k9 Oend. |; F3 Y5 P) H! O6 h
check时出错 |
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