The editor is equiped with a calculator that can evaluate simple expressions. If you want to calculate a simple expression, use the built-in calculator to get the answer quickly.

Following examples show how to use the built-in calculator:

1. Type in the expression you want to evaluate in the editor. The whole expression should be written in one line.

2. Press Ctrl+Enter to calculate the expression when the caret is in the line of expression.

3.14 * (2.43 + 0.91) < press Ctrl+Enter when the caret is in the expression line

= 10.487600 < you will get the answer immediately

There are two special variables in the ditor calculator:

$ans .If you want to use the value that was evaluated in the earler step, use a special variable named $ans.

$pi .The value of the variable $pi is 3.1415926535.

$ans / $pi = 3.338307

The editor supports basic mathematics functions which are very similar to those used in C math library.

sin(1.2) + atan2(3.2, 4.3) = 1.571809

abs, fabs, mod, fmod, ceil, floor, round, min, max, acos, asin, atan, atan2, cos, sin, tan, cosh, sinh, tanh, exp, log, log10, pow, sqr, sqrt

today, yeardays, monthdays, date2days, days2date, eomday, eomdate, weekday, isbizdate, nbizdate, pbizdate, adddays, addmonths, addterms, days360, days365, daysact, daysbet, monthsbet, termsbet, termfrac, yearfrac

abs, fabs fabs(x) - absolute value functions returns the absolute value of x, |x|.

mod, fmod fmod(x, y) - remainder functions returns the remainder f of the division of x by y, where f has the same sign as x, such that x=iy+f for some integer i, and |f| returns the remainder f of the division of x by y, where f has the same sign as x, such that x=iy+f for some integer i, and |f| < |y|.

ceil ceil(x) - ceiling function returns the smallest integer not less than x.

floor floor(x) - floor function returns the largest integer not greater than x.

round round(x) - round function rounds its argument to the nearest integral value.

min min(x, y) - minimum returns the minimum of a pair of values

max max(x, y) - maximum returns the maximum of a pair of values

acos acos(x) - arccosine function returns the arccosine of x in the range 0 to pi.

asin asin(x) - arcsine function returns the arcsine of x in the range -pi/2 to pi/2.

atan atan(x) - arctangent function returns the arctangent of x in the range -pi/2 to pi/2.

atan2 atan2(y, x) - arctangent-and-quadrant function returns the arctangent of y/x, in the range -pi to pi, using the signs of both arguments to determine the quadrant of the return value.

cos cos(x) - cosine function returns the cosine of x (x specified in radians).

sin sin(x) - sine function returns the sine of x (x specified in radians).

tan tan(x) - tangent function returns the tangent of x (x specified in radians).

cosh cosh(x) - hyperbolic cosine function returns the hyperbolic cosine of its argument.

sinh sinh(x) - hyperbolic sine function returns the hyperbolic sine of its argument.

tanh tanh(x) - hyperbolic tangent function returns the hyperbolic tangent of its argument.

exp exp(x) - exponential function returns e^x.

log log(x) - natural logarithm function returns the natural logarithm of x. The value of x must be greater than zero.

log10 log10(x) - common logarithm function returns the logarithm base ten of x. The value of x must be greater than zero.

pow pow(x, y) - power function returns x^y. If x is negative, y must be an integer value.

sqr sqr(x) - square function returns x*x.

sqrt sqrt(x) - square root function returns the non-negative square root of x. The value of x must not be less than zero.

Date Functions

today today() - current date returns the current date as a number. i.g. 20180807 (Aug. 07, 2018)

yeardays yeardays(year) - number of days in a year returns the actual number of days in the given year.

monthdays monthdays(year, month) - number of days in a month returns the actual number of days in the given month.

date2days date2days(date) - date to serial date number conversioN returns the number of days to the given date since the Epoch.

days2date days2date(date) - serial date number to date conversion date2days(date) returns the date calculated from the given number of days since the Epoch.

eomday eomday(year, month) - last day of month returns the last day of the month for the given year and month.

eomdate eomdate(year, month) - last date of month returns the last date of the month for the given year and month.

weekday weekday(date) - day of the week returns the day of the week in numeric form:

• 0 = Sun
• 1 = Mon
• 2 = Tue
• 3 = Wed
• 4 = Thu
• 5 = Fri
• 6 = Sat

isbizdate isbizday(date) - true for date that is business day returns 1 if date is a business day and 0 otherwise.

nbizdate nbizdate(date) - next business day returns the date of the next business day from the reference date.

pbizdate pbizdate(date) - previous business day returns the date of the previous business day from the reference date.

adddays adddays(date, days) - date added by given days returns the reference date added by given days.

addmonths addmonths(date, months, end_month) - date added by given months returns the reference date added by given months end_month:

• 0 = actual
• 1 = end month

addterms addterms(date, terms, frequency, end_month) - date added by given terms returns the reference date added by given terms frequency:

• 1 = annual
• 2 = semiannual
• 4 = quarterly
• 6 = bimonthly
• 12 = monthly

end_month:

• 0 = actual
• 1 = end month

days360 days360(start_date, end_date, european) - days between dates based on 360-day year returns the number of days between start_date and end_date based on a 360-day year:

• 0 = american
• 1 = european

days365 days365(start_date, end_date) - days between dates based on 365-day year returns the number of days between start_date and end_date based on a 365-day year.

daysact daysact(start_date, end_date) - actual number of days between dates returns the actual number of days between two dates.

daysbet daysbet(start_date, end_date, basis) - days between dates for any day-count basis returns the number of days between start_date and end_date using the given day-count basis basis:

• 0 = actual/actual
• 1 = actual/360
• 2 = actual/365
• 3 = 30/360
• 4 = 30E/360
• 5 = NL/365

monthsbet monthsbet(start_date, end_date) - months between dates returns the number of months between start_date and end_date.

termsbet termsbet(start_date, end_date, frequency) - terms between dates returns the number of terms between start_date and end_date frequency:

• 1 = annual
• 2 = semiannual
• 4 = quarterly
• 6 = bimonthly
• 12 = monthly

termfrac termfrac(start_date, end_date, frequency, basis, end_month)- fraction of term between dates returns a fraction based on the number of days between start_date and end_date using the given day-count basis frequency:

• 1 = annual
• 2 = semiannual
• 4 = quarterly
• 6 = bimonthly
• 12 = monthly

basis:

• 0 = actual/actual
• 1 = actual/360
• 2 = actual/365
• 3 = 30/360
• 4 = 30E/360
• 5 = NL/365

end_month:

• 0 = actual
• 1 = end month

yearfrac yearfrac(start_date, end_date, basis, end_month) - fraction of year between dates returns a fraction based on the number of days between start_date and end_date using the given day-count basis. basis:

• 0 = actual/actual
• 1 = actual/360
• 2 = actual/365
• 3 = 30/360
• 4 = 30E/360
• 5 = NL/365

end_month:

• 0 = actual
• 1 = end month