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发表于 2016-11-14 18:11:56
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回复 1# ya574544187
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自己看吧,官方的说明:
. F7 |5 D1 c8 g- ?fsg1;
; ^$ e. F2 |+ Mreturns9 |% y0 `0 W! @. V2 @+ N3 m! r6 K. a
advanced math functions
1 O7 V- I+ m) x9 p1 X( S& @: Y3 ?0 for values less then 0
6 x$ x5 `; I4 J0 R" K+ P0 C+ B" i1 for values greater then pr equal to 0
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" W7 O8 A' }. H/ x5 d2 z! X: m' kfsg2:
5 ~( f" q4 t. sreturns8 M. v: x" E1 E" o; r
advanced math functions
( Z) n# Z9 _& E* o0 for values equal to 05 r1 K$ n- d: T& L, D( o z1 V# S; S
1 for values not to 0+ D) F. B: W* B9 q: Z9 A, f; z
7 j9 h! c8 M/ L
fsg3:0 W5 L: c; L+ q* \6 R' n
returns
4 t$ |% ]$ O& j. R+ Q) D- ladvanced math functions5 \7 V8 r# d5 ^' N$ ~' v3 p
0 for negative values
6 Y e6 G J5 r' }) d. z1 for zero
% Y( e; `& }5 ^7 H( V" g2 for positive values |
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