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atan

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Defined in header <math.h>
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float       atanf( float arg );
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double      atan( double arg );
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long double atanl( long double arg );
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<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> Template:ddcl list end

Computes arc tangent of arg

Parameters

arg - floating point value

Return value

Arc tangent of arg in radians in the range of [-π/2; π/2] radians.

See also

Template:c/numeric/math/dcl list atan2Template:c/numeric/math/dcl list asinTemplate:c/numeric/math/dcl list acosTemplate:c/numeric/math/dcl list tan