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Man Pages
ATAN(3) FreeBSD Library Functions Manual ATAN(3)

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atan, atanf — 1 ?ѿ??ε????ܴؿ?

Math Library (libm, -lm)

<math.h> double (double x) float (float x)

atan() ?????? atanf() ?ؿ??ϡ? x ?ε????ܤμ??ͤ??׻????ޤ??? ?ݤ??ˤ????????ε????ϡ? math(3) ?򻲾Ȥ??Ƥ?????????

atan() ?????? atanf() ?ؿ??ϡ? [-pi/2, +pi/2] ?饸?????ζ??֤ε????ܤ??֤??ޤ???

acos(3), asin(3), atan2(3), cos(3), cosh(3), math(3), sin(3), sinh(3), tan(3), tanh(3)

atan() ?ؿ??ϡ? ISO/IEC 9899:1990 (“ISO C90”) ??Ŭ?礷?Ƥ??ޤ???

May 2, 1991 FreeBSD 14.3-RELEASE
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