acos | acos(x)
Returns the arccosine of x in radians. | math and cmath |
acosh | acosh(x)
Returns the arc hyperbolic cosine of x in radians. | cmath only |
asin | asin(x)
Returns the arcsine of x in radians. | math and cmath |
asinh | asinh(x)
Returns the arc hyperbolic sine of x in radians. | cmath only |
atan | atan(x)
Returns the arctangent of x in radians. | math and cmath |
atanh | atanh(x)
Returns the arc hyperbolic tangent of x in radians. | cmath only |
atan2 | atan2(y,x)
Like atan(y/x), except that atan2 properly takes into account the signs of both arguments. For example:
>>> import math
>>> math.atan(-1./-1.)
0.78539816339744828
>>> math.atan2(-1., -1.)
-2.3561944901923448
Also, when x equals 0, atan2 returns pi/2, while dividing by x would raise ZeroDivisionError.
| math only |
ceil | ceil(x)
Returns float(i), where i is the lowest integer such that i >= x. | math only |
cos | cos(x)
Returns the cosine of x in radians. | math and cmath |
cosh | cosh(x)
Returns the hyperbolic cosine of x in radians. | math and cmath |
e | The mathematical constant e. | math and cmath |
exp | exp(x)
Returns e**x. | math and cmath |
fabs | fabs(x)
Returns the absolute value of x. | math only |
floor | floor(x)
Returns float(i), where i is the highest integer such that i <= x. | math only |
fmod | fmod(x,y)
Returns the float r, with the same sign as x, such that r==x-n*y for some integer n, and abs(r)<abs(y). Like x%y, except that, when x and y differ in sign, x%y has the same sign as y, not the same sign as x. | math only |
frexp | frexp(x)
Returns a pair (m,e) with the so-called "mantissa" (in fact, the significand) and exponent of x. m is a floating-point number, and e is an integer such that x==m*(2**e) and 0.5<=abs(m)<1, except that frexp(0) returns (0.0,0). | math only |
hypot | hypot(x,y)
Returns sqrt(x*x+y*y). | math only |
ldexp | ldexp(x,i)
Returns x*(2**i) (i should be an int; if i is a float, i gets truncated, but that situation also produces a warning). | math only |
log | log(x)
Returns the natural logarithm of x. | math and cmath |
log10 | log10(x)
Returns the base-10 logarithm of x. | math and cmath |
modf | modf(x)
Returns a pair (f,i) with fractional and integer parts of x, meaning two floats with the same sign as x such that i==int(i) and x==f+i. | math only |
pi | The mathematical constant π. | math and cmath |
pow | pow(x,y)
Returns x**y. | math only |
sin | sin(x)
Returns the sine of x in radians. | math and cmath |
sinh | sinh(x)
Returns the hyperbolic sine of x in radians. | math and cmath |
sqrt | sqrt(x)
Returns the square root of x. | math and cmath |
tan | tan(x)
Returns the tangent of x in radians. | math and cmath |
tanh | tanh(x)
Returns the hyperbolic tangent of x in radians. | math and cmath |
