CAL — Calculator

Evaluates a mathematical expression.

• Command: CAL · Global name: _CAL
• Ribbon: Home › Utilities

Evaluates a mathematical expression typed on the command line and shows the result. It does not change the drawing.

Use

1. Type CAL or click its button.
2. Type the expression and press Enter.

Expression to evaluate:

3. The result appears on the command line with the drawing format (UNITS).

Expressions

• Operators: +, -, *, /, ^ (power) and the sign; use parentheses to group.
• Constants: pi and e.
• Functions: sin, cos, tang, asin, acos, atan, sqrt, sqr (square), abs, ln, log (base 10), exp, round, trunc, r2d and d2r.

Points and vectors

• Points and vectors are written [x,y] or [x,y,z]. They add and subtract; number*point scales them; a*b is the dot product and a&b the cross product.
• Geometric functions: dist(p1,p2), ang(p1,p2) (degrees in the XY plane; also ang(vertex,p1,p2)), vec(p1,p2), vec1(p1,p2) (unit), mee(p1,p2) (midpoint), ill(p1,p2,p3,p4) (intersection of two lines), pld(p1,p2,d) (point at distance d from p1 towards p2), plt(p1,p2,t) (parametric point), rot(p,origin,angle), xof, yof, zof and mag; cvunit(value,from,to) converts units (mm, cm, m, km, in, ft, yd, mi, deg, rad, grad, g, kg, lb, oz, c, f, k).
• Drawing points: cur (any point) and the snaps end, mid, int, ins, nea, nod, qua, cen, per and tan ask for a point with the mouse; rad asks for an arc or circle and gives its radius. Example: dist(cur,cur) or (end+end)/2.
• The snap functions do not force the mode: the point comes out with the active snaps of the status bar (OSNAP). Coordinates are flat (Z = 0).

Notes

• Trigonometric angles are in degrees, like the AutoCAD calculator; atan returns degrees.
• Examples: 2+3*4, sqrt(2)*10, sin(30), (1+2)^3.

See also

DIST · AREA · ID · UNITS