NAME
complex —
complex arithmetic
LIBRARY
library “libm”
SYNOPSIS
#include
<complex.h>
DESCRIPTION
These functions support complex arithmetic in the C math library.LIST OF FUNCTIONS
Each of the following double complex
functions has a float complex counterpart with an
‘f’ appended to the name and a
long double complex counterpart with an
‘l’ appended. As an example, the
float complex and long double
complex counterparts of double
cabs(double
complex z) are float
cabsf(float
complex z) and long double
cabsl(long
double complex z), respectively.
Absolute-value Functions
| Name | Description |
| cabs | complex absolute value (i.e., norm, modulus, magnitude) |
| csqrt | complex square root |
Exponential Function
| Name | Description |
| cexp | exponential base e |
Natural logarithm Function
| Name | Description |
| clog | natural logarithm |
Manipulation Functions
| Name | Description |
| carg | compute the argument (i.e., phase angle) |
| cimag | compute the imaginary part |
| conj | compute the complex conjugate |
| cproj | compute projection onto Riemann sphere |
| creal | compute the real part |
Trigonometric and Hyperbolic Functions
| Name | Description |
| cacos | arc cosine |
| cacosh | arc hyperbolic cosine |
| casin | arc sine |
| casinh | arc hyperbolic sine |
| catan | arc tangent |
| catanh | arc hyperbolic tangent |
| ccos | cosine |
| ccosh | hyperbolic cosine |
| cpow | power function |
| csin | sine |
| csinh | hyperbolic sine |
| ctan | tangent |
| ctanh | hyperbolic tangent |
SEE ALSO
fenv(3), ieee(3), math(3), tgmath(3)
ISO/IEC 9899:TC3, http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf.
STANDARDS
The <complex.h>
functions described here conform to ISO/IEC 9899:1999
(“ISO C99”).