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C++ Mathematical Expression Library (ExprTk) http://www.partow.net/programming/exprtk/index.html

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Arash Partow
2013-07-12 23:08:57 +10:00
parent 2a9a16fd66
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21
readme.txt
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@ -15,10 +15,10 @@ operations, functions and processes:
(0) Basic operators: +, -, *, /, %, ^
(1) Functions: abs, avg, ceil, clamp, erf, erfc, exp, floor,
frac, inrange, log, log10, log1p, log2, logn,
max, min, root, round, roundn, sgn, sqrt, sum,
trunc
(1) Functions: abs, avg, ceil, clamp, erf, erfc, exp, expm1,
floor, frac, inrange, log, log10, log1p, log2,
logn, max, min, root, round, roundn, sgn, sqrt,
sum, trunc
(2) Trigonometry: acos, asin, atan, atan2, cos, cosh, cot, csc,
deg2grad, deg2rad, grad2deg, hypot, rad2deg,
@ -219,6 +219,9 @@ include path (e.g: /usr/include/).
+----------+---------------------------------------------------------+
| exp | e to the power of x |
+----------+---------------------------------------------------------+
| expm1 | e to the power of x minus 1, where x is very small. |
| | (eg: expm1(x)) |
+----------+---------------------------------------------------------+
| floor | Largest integer that is less than or equal to x. |
+----------+---------------------------------------------------------+
| frac | Fractional portion of x |
@ -331,10 +334,10 @@ include path (e.g: /usr/include/).
| | 3. x[ : ] == 'abcdefgh' |
| | 4. x[4/2:3+2] == x[2:5] == 'cdef' |
| | |
| | Note: Both r0 and r1 are assumed to be integers. They |
| | may also be the result of an expression, in the event |
| | they have fractional components truncation will be |
| | performed. (eg: 1.67 -> 1) |
| | Note: Both r0 and r1 are assumed to be integers, where |
| | r0 <= r1. They may also be the result of an expression, |
| | in the event they have fractional components truncation |
| | will be performed. (eg: 1.67 -> 1) |
+----------+---------------------------------------------------------+
(6) Control Structures
@ -517,7 +520,7 @@ correctly optimize such expressions for a given architecture.
that have been defined prior to their own definition.
(17) Recursive calls made from within composited functions will have
a stack size bound by the stack of executing architecture.
a stack size bound by the stack of the executing architecture.
(18) Expressions may contain any of the following comment styles:
1. // .... \n