Functions

When writing out measurement equations in Seamly, there are many mathematical functions that one may use to make them work seamlessly. This is [to be] a list of the functions, with a one-line example of how to actually use them in equations. Functions are served by the muparser math library.

A picture of the Functions table.

Basic Functions

These are functions which are so basic that they didn't get included in the list

+ plus (3+4=7)

- minus (3-4=-1)

* times (3*4=12)

/ dividedby (3/4=.75)

^ to the power of (3^4=81)

Advanced Functions

Most of these functions are found in the table, however there are several which depend on your ability to construct an IF function in Seamly. As such, I will discuss the IF statement, (which is not in the list,) first, & then proceed in alphabetical order as the functions appear in the list. It may be better to list them by branch of mathematics, but for now the list, & thus the alphabet, has priority.

IF function

• if a<b then c else d looks like ( a<b ? c : d) in Seamly2D formulas.
• if e<f then f else g looks like (e<f ? f : g)
• When d is another test, then it looks like: ( a<b ? c : (e<f ? f : g) )

abs - absolute value

abs(3-4)=1

acos - arcus cosine function working with radians

acos(-1)=3.14159

acos(1)=0

(-1≤N≤1)

acosD - arcus cosine function working with degrees

acosD(-1)=180

acosD(1)=0

(-1≤N≤1)

acosh - hyperbolic arcus cosine function

acosh(1)=0

acosh(2)=1.31696

(N ≥ 1)