Function

Meaning

Example

acos

arc cosine

acos(a)

acosh

hyperbolic arc cosine

acosh(a)

asin

arc sine

asin(a)

asinh

hyperbolic arch sine

asinh(a)

atan

arc tangent

atan(a)

atanh

hyperbolic arc tangent

atanh(a)

cos

cosine

cos(a)

cosh

hyperbolic cosine

cosh(a)

exp

e to the power of a complex number

exp(a)

isclose

tests if two complex numbers are close

isclose(a, b)

isfinite

tests if all parts of a complex number are finite

isfinite(a)

isinf

tests if any part of a complex number is infinite

isinf(a)

isnan

tests if any part of a complex number is NaN

isnan(a)

log

logarithm (natural logarithm if base unspecified)

log(a, base)

log10

base-10 logarithm

log10(a)

phase

phase of a complex number

phase(a)

polar

translate a complex number into polar coordinates (r, phi, )

polar(a)

rect

translate polar coordinates r and phi into a complex number

rect(r, phi)

sin

sine

sin(a)

sinh

hyperbolic sine

sinh(a)

sqrt

square root

sqrt(a)

tan

tangent

tan(a)

tanh

hyperbolic tangent

tanh(a)

Name

Value

cmath.pi

π as a float

cmath.e

e as a float

cmath.tau

τ as a float

cmath.inf

floating-point positive infinity; same as float('inf')

cmath.infj

complex(0.0, float('inf'))

cmath.nan

floating-point not a number; same as float('nan')

cmath.nanj

complex(0.0, float('nan'))