HP 39gII - Page 186

176 Using mathematical functions
%TOTAL Percent total : (100)y/x. What percentage of x, is y.
%TOTAL(x, y)
Example:
%TOTAL(20,50) returns 250
RAD→DEG Radians to degrees. Converts value from radians to
degrees.
RAD→DEG (value)
Example:
RAD→DEG(π) returns 180
ROUND Rounds value to decimal places. Accepts complex
numbers.
ROUND(value, places)
Round can also round to a number of significant digits as
showed in the second example below.
Examples:
ROUND(7.8676,2) returns 7.87
ROUND(0.0036757,-3) returns 0.00368
SIGN Sign of value. If positive, the result is 1. If negative, –1. If
zero, result is zero. For a complex number, this is the unit
vector in the direction of the number.
SIGN(value)
SIGN((x, y))
Example:
SIGN (–2) returns –1
SIGN((3,4)) returns (.6,.8)
TRUNCATE Truncates value to decimal places. Accepts complex
numbers.
TRUNCATE(value, places)
Example:
TRUNCATE(2.3678,2) returns 2.36