用的计算库是tinyexpr,全套语法:
Functions supported
TinyExpr supports addition (+), subtraction/negation (-), multiplication (*), division (/), exponentiation (^) and modulus (%) with the normal operator precedence (the one exception being that exponentiation is evaluated left-to-right, but this can be changed - see below).
The following C math functions are also supported:
abs (calls to fabs), acos, asin, atan, atan2, ceil, cos, cosh, exp, floor, ln (calls to log), log (calls to log10 by default, see below), log10, pow, sin, sinh, sqrt, tan, tanh
The following functions are also built-in and provided by TinyExpr:
fac (factorials e.g. fac 5 == 120)
ncr (combinations e.g. ncr(6,2) == 15)
npr (permutations e.g. npr(6,2) == 30)
Also, the following constants are available:
pi, e
【 在 gm123 的大作中提到: 】
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