math - mathematical functions (standard library)¶
OVERVIEW¶
This library is an interface to the standard C math library. It
provides all its functions inside the table
math.
INTERFACE¶
-
math.abs()¶
math.abs (x)
Returns the absolute value of x.
-
math.acos()¶
math.acos (x)
Returns the arc cosine of x (in radians).
-
math.asin()¶
math.asin (x)
Returns the arc sine of x (in radians).
-
math.atan()¶
math.atan (x)
Returns the arc tangent of x (in radians).
-
math.atan2()¶
math.atan2 (y, x)
Returns the arc tangent of y/x (in radians), but uses the
signs of both parameters to find the quadrant of the result. (It also
handles correctly the case of x being zero.)
-
math.ceil()¶
math.ceil (x)
Returns the smallest integer larger than or equal to x.
-
math.cos()¶
math.cos (x)
Returns the cosine of x (assumed to be in radians).
-
math.cosh()¶
math.cosh (x)
Returns the hyperbolic cosine of x.
-
math.deg()¶
math.deg (x)
Returns the angle x (given in radians) in degrees.
-
math.exp()¶
math.exp (x)
Returns the value e^x.
-
math.floor()¶
math.floor (x)
Returns the largest integer smaller than or equal to x.
-
math.fmod()¶
math.fmod (x, y)
Returns the remainder of the division of x by y,
that rounds the quotient towards zero.
-
math.frexp()¶
math.frexp (x)
Returns m and e such that x =
m2^e, e is an integer and the absolute
value of m is in the range [0.5, 1) (or zero
when x is zero).
math.huge
The value HUGE_VAL, a value larger than or equal to any
other numerical value.
-
math.ldexp()¶
math.ldexp (m, e)
Returns m2^e (e should be an integer).
-
math.log()¶
math.log (x)
Returns the natural logarithm of x.
math.log10 (x)
Returns the base-10 logarithm of x.
-
math.max()¶
math.max (x, ...)
Returns the maximum value among its arguments.
-
math.min()¶
math.min (x, ...)
Returns the minimum value among its arguments.
-
math.modf()¶
math.modf (x)
Returns two numbers, the integral part of x and the
fractional part of x.
math.pi
The value of pi.
-
math.pow()¶
math.pow (x, y)
Returns x^y. (You can also use the expression x^y to
compute this value.)
-
math.rad()¶
math.rad (x)
Returns the angle x (given in degrees) in radians.
-
math.random()¶
math.random ([m [, n]])
This function is an interface to the simple pseudo-random generator
function rand provided by ANSI C. (No guarantees
can be given for its statistical properties.)
When called without arguments, returns a uniform pseudo-random real
number in the range [0,1). When called with an integer number
m, math.random returns a uniform pseudo-random integer in the
range [1, m]. When called with two integer numbers m and n,
math.random returns a uniform pseudo-random integer in
the range [m, n].
-
math.randomseed()¶
math.randomseed (x)
Sets x as the “seed” for the pseudo-random generator:
equal seeds produce equal sequences of numbers.
-
math.sin()¶
math.sin (x)
Returns the sine of x (assumed to be in radians).
-
math.sinh()¶
math.sinh (x)
Returns the hyperbolic sine of x.
-
math.sqrt()¶
math.sqrt (x)
Returns the square root of x. (You can also use the
expression x^0.5 to compute this value.)
-
math.tan()¶
math.tan (x)
Returns the tangent of x (assumed to be in radians).
-
math.tanh()¶
math.tanh (x)
Returns the hyperbolic tangent of x.
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