Function & Argument Type(s)

Description

    Example

acos

double in the range[-1.0, 1.0] / complex

Return Type: double in the range[0.0, pi] / NaN if out of range / complex

arc cosine complex case

x = acos(0.0)

  = 1.5707

acosh

double greater than 1 / complex

Return Type: double / complex

hyperbolic arc cosine, defined for both double and complex case by:

x = acosh(1.0)

   = 0.0

asin

double in the range[-1.0, 1.0] / complex

Return Type: double in the range[-pi/2, pi/2] / NaN if out of range / complex

arc sine complex case:

x = asin(1.0)

   = 1.5707

asinh

double / complex

Return Type: double / complex

hyperbolic arc sine complex case:

x = asinh(1.0)

   = 0.88

atan

double / complex

Return Type: double in the range [-pi/2, pi/2] / complex

arc tangent complex case:

x = atan(1.0)

   = 0.785

atan2

double, double

Return Type: double in the range [-pi, pi]

angle of a vector

Note: The arguments are (y, x), not (x, y) as one might expect

x = atan2(2.0,3.0)

 = 0.588

cos

double / complex

Return Type: double in the range / complex

cosine complex case:

x = cos(1.0)

   = 0.54

cosh

double / complex

Return Type: double / complex

hyperbolic cosine, defined for double / complex by:

x = cosh(1.0)

   = 1.543

sin

double / complex

Return Type: double / complex

sine function complex case:

x = sin(1.0)

   = 0.841

tan

double / complex

Return Type: double / complex

 tangent function, defined for double / complex by:

x = tan(1.0)

   = 1.557

tanh

double / complex

Return Type: double / complex

hyperbolic tangent, defined for double / complex by:

x = tanh(1.0)

   = 0.761