cargf, carg, cargl
From cppreference.com
| Defined in header <complex.h>
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| float cargf( float complex z ); |
(1) | (since C99) |
| double carg( double complex z ); |
(2) | (since C99) |
| long double cargl( long double complex z ); |
(3) | (since C99) |
| Defined in header <tgmath.h>
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| #define carg( z ) |
(4) | (since C99) |
1-3) Computes the argument (also called phase angle) of
z, with a branch cut along the negative real axis.4) Type-generic macro: if
z has type long double complex, long double imaginary, or long double, cargl is called. If z has type float complex, float imaginary, or float, cargf is called. If z has type double complex, double imaginary, double, or any integer type, carg is called.Parameters
| z | - | complex argument |
Return value
If no errors occur, returns the phase angle of z in the interval (−π; π).
Errors and special cases are handled as if the function is implemented as atan2(cimag(z), creal(z))