CPLXTRIG(3CC4)CPLXTRIG(3CC4)NAMEcplxtrig - trigonometric functions in the C++ complex number math
library
SYNOPSIS
#include <complex.h>
class complex {
public:
friend complex cos(const complex);
friend complex sin(const complex);
friend complex tan(const complex);
friend complex cosh(const complex);
friend complex sinh(const complex);
friend complex tanh(const complex);
friend complex acos(const complex);
friend complex asin(const complex);
friend complex atan(const complex);
... // remainder not shown here
};
DESCRIPTION
These functions are versions of the corresponding floating-point
trigonometric math library functions, overloaded for use with complex
numbers.
complex z = cos(x)
Returns the complex cosine of complex angle x.
complex z = sin(x)
Returns the complex sine of complex angle x.
complex z = tan(x)
Returns the complex tangent of complex angle x.
complex z = cosh(x)
Returns the complex hyperbolic cosine of complex angle x.
complex z = sinh(x)
Returns the complex hyperbolic sine of complex angle x.
complex z = tanh(x)
Returns the complex hyperbolic tangent of complex angle x.
complex z = acos(x)
Returns the complex angle whose cosine is complex x.
complex z = asin(x)
Returns the complex angle whose sine is complex x.
complex z = atan(x)
Returns the complex angle whose tangent is complex x.
SEE ALSOcplx.intro(3CC4), cartpol(3CC4), cplxerr(3CC4), cplxexp(3CC4), cplx‐
ops(3CC4), intro(2), C++ Library Reference Chapter 2, "The Complex
Arithmetic Library."
DIAGNOSTICSsinh(x) and cosh(x)
If the imaginary part of x would cause overflow, returns (0,0).
If the real part is large enough to cause overflow, returns a
value depending on the sine and cosine of the imaginary part of
x:
In all cases, errno is set to ERANGE (see intro(2)). See also
cplxerr(3CC4).
07 August 1997 CPLXTRIG(3CC4)
