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发表于 2016-11-14 18:11:56
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回复 1# ya574544187 4 v) y3 }9 \% g" f2 b$ t
6 g0 j6 U2 p1 K g自己看吧,官方的说明:& _1 a+ `2 J) G5 q! P& F
fsg1;
9 h/ T$ ^ W9 y2 m$ R7 G2 g, J. oreturns: k T0 a8 A% M9 u
advanced math functions
' Z# `! j# `+ ]( v' ~0 for values less then 08 m: Q. n t9 f9 c, u d2 D0 r+ N4 a
1 for values greater then pr equal to 0. b; Y* b! I0 V9 `' Y
; H- _& l7 F+ z( B+ m
fsg2:
3 e4 H& x; X* S% n# d6 ereturns8 }7 o' i% e5 f9 s% {
advanced math functions
% `4 H U- i. y; P- n0 for values equal to 0
, {% H V. _, [# ~& S$ Z1 t1 for values not to 0
0 |! A" f" S+ P. |( \7 e
; ]' `( ]' |/ ^! ffsg3:7 h2 U1 s5 s$ C* @8 C
returns
* `! |) X+ K) \2 m) j1 }advanced math functions: o- E8 i2 b+ [7 b9 p. F# ^) E
0 for negative values3 q) c) r6 f8 R( L
1 for zero : g& c' N/ Z3 h2 i
2 for positive values |
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