1CABS(3) Linux Programmer's Manual CABS(3)
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6 cabs, cabsf, cabsl - absolute value of a complex number
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9 #include <complex.h>
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11 double cabs(double complex z);
12 float cabsf(float complex z);
13 long double cabsl(long double complex z);
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15 Link with -lm.
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18 These functions return the absolute value of the complex number z. The
19 result is a real number.
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22 These functions first appeared in glibc in version 2.1.
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25 For an explanation of the terms used in this section, see
26 attributes(7).
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28 ┌─────────────────────────┬───────────────┬─────────┐
29 │Interface │ Attribute │ Value │
30 ├─────────────────────────┼───────────────┼─────────┤
31 │cabs(), cabsf(), cabsl() │ Thread safety │ MT-Safe │
32 └─────────────────────────┴───────────────┴─────────┘
34 C99, POSIX.1-2001, POSIX.1-2008.
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37 The function is actually an alias for hypot(a, b) (or, equivalently,
38 sqrt(a*a + b*b)).
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41 abs(3), cimag(3), hypot(3), complex(7)
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44 This page is part of release 4.16 of the Linux man-pages project. A
45 description of the project, information about reporting bugs, and the
46 latest version of this page, can be found at
47 https://www.kernel.org/doc/man-pages/.
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51 2015-04-19 CABS(3)