1CLOG(3) complex math routines CLOG(3)
2
3
4
6 clog, clogf, clogl - natural logarithm of a complex number
7
9 #include <complex.h>
10
11 double complex clog(double complex z);
12 float complex clogf(float complex z);
13 long double complex clogl(long double complex z);
14
15 Link with -lm.
16
18 The logarithm clog() is the inverse function of the exponential cexp().
19 Thus, if y = clog(z), then z = cexp(y). The imaginary part of y is
20 chosen in the interval [-pi,pi].
21
22 One has clog(z) = log(cabs(z))+I*carg(z).
23
24 Note that z close to zero will cause an overflow.
25
27 C99
28
30 cabs(3), cexp(3), clog10(3), complex(7)
31
32
33
34 2002-07-28 CLOG(3)