Note: This is a work in progress and many formatting issues have been fixed. Read more about the project on the home page.

ln, ln1, log2

the ln of number

the ln1 of number

the log2 of number

Values returned:

ln returns a number equal to the base-e or natural logarithm of number.

ln1 returns a number equal to the natural logarithm of 1 + number.

ln2 returns a number equal to the base-2 logarithm of number.

Examples

the ln of 2.718282 --returns 1

ln(2.718282)

ln1 of 1.718282 --returns 1

ln1(1.718282)

log2 of 1024 -- returns 10

log2 of 1024 - 512 -- returns -502

log2 of (1024 - 512)  -- returns 9

Placeholders

number

An expression that evaluates to a number.

For example:

169 / 19

pi

(60.625 * 500)

average(1,4,5,10)

i+1 -- (where i is a number)

line 1 of fld "Debits"

Note: Formally, HyperCard distinguishes between factors (simple values) and expressions. The difference between factors and expression matters only if you like to drop parentheses. Most functions take factors as their parameters, which is why abs of -10 + 2 returns 12 and abs of (-10 + 2) returns 8. In short, always use parentheses to group things the way you want them to evaluate, and you won’t have to worry about the difference between factors and expressions.