Math
Math¶
This module implements various mathematical functions.
Except when explicitly noted otherwise, all return values are floats. The underlying implementations works on double precision floats that are converted back to single precision if the VM does not support double precision.
No exceptions are raised: in case of error, the return value can be infinite or NaN. Such cases can be checked with the provided functions.
The following constants are defined:
pi
= 3.14159265e
= 2.71828182
function tan
¶
tan(x)
Return the tangent of x radians.
function cos
¶
cos(x)
Return the cosine of x radians.
function sin
¶
sin(x)
Return the sine of x radians.
function atan2
¶
atan2(y, x)
Return atan(y / x)
, in radians. The result is between -pi
and pi
. The vector in the plane from the origin to point (x, y)
makes this angle with the positive X axis. The point of atan2
is that the signs of both inputs are known to it, so it can compute the correct quadrant for the angle. For example, atan(1)
and atan2(1, 1)
are both pi/4
, but atan2(-1, -1)
is -3*pi/4
.
function atan
¶
atan(x)
Return the arc tangent of x, in radians.
function acos
¶
acos(x)
Return the arc cosine of x, in radians.
function asin
¶
asin(x)
Return the arc sine of x, in radians.
function degress
¶
degress(rad)
Converts rad from radians to degrees.
function radians
¶
radians(degree)
Converts degree from degrees to radians.
function exp
¶
exp(x)
Return e**x
.
function log
¶
log(x[, base])
With one argument or with base non positive, return the natural logarithm of x (to base e).
With two arguments, return the logarithm of x to the given base, calculated as log(x)/log(base)
.
function pow
¶
pow(x, y)
Return x
raised to the power y
.
Unlike the built-in **
operator, math.pow
converts both its arguments to type float
. Use **
or the built-in pow
function for computing exact integer powers.
function sqrt
¶
sqrt(x)
Return the square root of x.
function isnan
¶
isnan(x)
Return True
if x is a NaN (not a number), and False
otherwise.
function isinf
¶
isinf(x)
Return True
if x is a positive or negative infinity, and False
otherwise.
function floor
¶
floor(x)
Return the floor of x, the largest integer less than or equal to x.
function ceil
¶
ceil(x)
Return the ceiling of x, the smallest integer greater than or equal to x.
function trunc
¶
trunc(x, n)
Return the value of x truncated to the n decimal.