1catan(3M)               Mathematical Library Functions               catan(3M)
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NAME

6       catan, catanf, catanl - complex arc tangent functions
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SYNOPSIS

9       c99 [ flag... ] file... -lm [ library... ]
10       #include <complex.h>
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12       double complex catan(double complex z);
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15       float complex catanf(float complex z);
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18       long double complex catanl(long double complex z);
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DESCRIPTION

22       These  functions compute the complex arc tangent of z, with branch cuts
23       outside the interval [ −i, +++++pipii ] along the imaginary axis.
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RETURN VALUES

26       These functions return the complex arc tangent value, in the range of a
27       strip  mathematically  unbounded  along  the  imaginary axis and in the
28       interval [ −pi/2, +pi/2 ] along the real axis.
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ERRORS

31       No errors are defined.
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ATTRIBUTES

34       See attributes(5) for descriptions of the following attributes:
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39       ┌─────────────────────────────┬─────────────────────────────┐
40       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
41       ├─────────────────────────────┼─────────────────────────────┤
42       │Interface Stability          │Standard                     │
43       ├─────────────────────────────┼─────────────────────────────┤
44       │MT-Level                     │MT-Safe                      │
45       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

48       complex.h(3HEAD), ctan(3M), attributes(5), standards(5)
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52SunOS 5.11                        12 Jul 2006                        catan(3M)