1LOG10(3) Linux Programmer's Manual LOG10(3)
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6 log10, log10f, log10l - base-10 logarithmic function
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9 #include <math.h>
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11 double log10(double x);
12 float log10f(float x);
13 long double log10l(long double x);
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15 Link with -lm.
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17 Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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19 log10f(), log10l(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600
20 || _ISOC99_SOURCE; or cc -std=c99
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23 The log10() function returns the base 10 logarithm of x.
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26 On success, these functions return the base 10 logarithm of x.
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28 For special cases, including where x is 0, 1, negative, infinity, or
29 NaN, see log(3).
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32 See math_error(7) for information on how to determine whether an error
33 has occurred when calling these functions.
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35 For a discussion of the errors that can occur for these functions, see
36 log(3).
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39 C99, POSIX.1-2001. The variant returning double also conforms to SVr4,
40 4.3BSD, C89.
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43 cbrt(3), clog10(3), exp10(3), sqrt(3)
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46 This page is part of release 3.22 of the Linux man-pages project. A
47 description of the project, and information about reporting bugs, can
48 be found at http://www.kernel.org/doc/man-pages/.
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52 2008-08-05 LOG10(3)