1CLOG(P) POSIX Programmer's Manual CLOG(P)
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6 clog, clogf, clogl - complex natural logarithm functions
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9 #include <complex.h>
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11 double complex clog(double complex z);
12 float complex clogf(float complex z);
13 long double complex clogl(long double complex z);
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17 These functions shall compute the complex natural (base e) logarithm of
18 z, with a branch cut along the negative real axis.
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21 These functions shall return the complex natural logarithm value, in
22 the range of a strip mathematically unbounded along the real axis and
23 in the interval [-ipi, +ipi] along the imaginary axis.
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26 No errors are defined.
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28 The following sections are informative.
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31 None.
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34 None.
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37 None.
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40 None.
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43 cexp() , the Base Definitions volume of IEEE Std 1003.1-2001, <com‐
44 plex.h>
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47 Portions of this text are reprinted and reproduced in electronic form
48 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
49 -- Portable Operating System Interface (POSIX), The Open Group Base
50 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
51 Electrical and Electronics Engineers, Inc and The Open Group. In the
52 event of any discrepancy between this version and the original IEEE and
53 The Open Group Standard, the original IEEE and The Open Group Standard
54 is the referee document. The original Standard can be obtained online
55 at http://www.opengroup.org/unix/online.html .
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59IEEE/The Open Group 2003 CLOG(P)