man3/clog10.3

   1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
   2 .\"
   3 .\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
   4 .\" Distributed under GPL
   5 .\" %%%LICENSE_END
   6 .\"
   7 .TH CLOG10 3 2015-03-02 "" "Linux Programmer's Manual"
   8 .SH NAME
   9 clog10, clog10f, clog10l \- base-10 logarithm of a complex number
  10 .SH SYNOPSIS
  11 .BR "#define _GNU_SOURCE" "         /* See feature_test_macros(7) */"
  12 .br
  13 .B #include <complex.h>
  14 .sp
  15 .BI "double complex clog10(double complex " z );
  16 .br
  17 .BI "float complex clog10f(float complex " z );
  18 .br
  19 .BI "long double complex clog10l(long double complex " z );
  20 .sp
  21 Link with \fI\-lm\fP.
  22 .SH DESCRIPTION
  23 The call
  24 .I clog10(z)
  25 is equivalent to
  26 .IR clog(z)/log(10) .
  27 The other functions perform the same task for
  28 .I float
  29 and
  30 .IR "long double" .
  31
  32 Note that
  33 .I z
  34 close to zero will cause an overflow.
  35 .SH VERSIONS
  36 These functions first appeared in glibc in version 2.1.
  37 .SH ATTRIBUTES
  38 For an explanation of the terms used in this section, see
  39 .BR attributes (7).
  40 .TS
  41 allbox;
  42 lbw30 lb lb
  43 l l l.
  44 Interface       Attribute       Value
  45 T{
  46 .BR clog10 (),
  47 .BR clog10f (),
  48 .BR clog10l ()
  49 T}      Thread safety   MT-Safe
  50 .TE
  51 .SH CONFORMING TO
  52 These functions are GNU extensions.
  53 It is reserved for future use in C99.
  54 .SH SEE ALSO
  55 .BR cabs (3),
  56 .BR cexp (3),
  57 .BR clog (3),
  58 .BR clog2 (3),
  59 .BR complex (7)