GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
RedHat 9.0(Shrike) |
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atan(3) |
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atan − arc tangent function
#include <math.h>
double atan(double x);
The atan() function calculates the arc tangent of x; that is the value whose tangent is x.
The atan() function returns the arc tangent in radians and the value is mathematically defined to be between -PI/2 and PI/2 (inclusive).
SVID 3, POSIX, BSD 4.3, ISO 9899
acos(3), asin(3), atan2(3), cos(3), sin(3), tan(3)
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atan(3) | |