note description: "[ Basic mathematical operations, double-precision. This class may be used as ancestor by classes needing its facilities. ]" library: "Free implementation of ELKS library" status: "See notice at end of class." legal: "See notice at end of class." date: "$Date: 2018-04-28 20:47:11 +0000 (Sat, 28 Apr 2018) $" revision: "$Revision: 101695 $" class DOUBLE_MATH inherit MATH_CONST create default_create feature -- Access log_2 (v: REAL_64): REAL_64 -- Base 2 logarithm of v. do Result := log (v) / log ({REAL_64} 2.0) ensure instance_free: class end cosine (v: REAL_64): REAL_64 -- Trigonometric cosine of radian v approximated -- in the range [-pi/4, +pi/4]. external "C signature (double): double use <math.h>" alias "cos" ensure instance_free: class end arc_cosine (v: REAL_64): REAL_64 -- Trigonometric arccosine of radian v -- in the range [0, pi]. external "C signature (double): double use <math.h>" alias "acos" ensure instance_free: class end sine (v: REAL_64): REAL_64 -- Trigonometric sine of radian v approximated -- in range [-pi/4, +pi/4]. external "C signature (double): double use <math.h>" alias "sin" ensure instance_free: class end arc_sine (v: REAL_64): REAL_64 -- Trigonometric arcsine of radian v -- in the range [-pi/2, +pi/2]. external "C signature (double): double use <math.h>" alias "asin" ensure instance_free: class end tangent (v: REAL_64): REAL_64 -- Trigonometric tangent of radian v approximated -- in range [-pi/4, +pi/4]. external "C signature (double): double use <math.h>" alias "tan" ensure instance_free: class end arc_tangent (v: REAL_64): REAL_64 -- Trigonometric arctangent of radian v -- in the range [-pi/2, +pi/2]. external "C signature (double): double use <math.h>" alias "atan" ensure instance_free: class end sqrt (v: REAL_64): REAL_64 -- Square root of v. external "C signature (double): double use <math.h>" ensure instance_free: class end exp (x: REAL_64): REAL_64 -- Exponential of v. external "C signature (double): double use <math.h>" ensure instance_free: class end log (v: REAL_64): REAL_64 -- Natural logarithm of v. external "C signature (double): double use <math.h>" ensure instance_free: class end log10 (v: REAL_64): REAL_64 -- Base 10 logarithm of v. external "C signature (double): double use <math.h>" ensure instance_free: class end floor (v: REAL_64): REAL_64 -- Greatest integral less than or equal to v. external "C signature (double): double use <math.h>" ensure instance_free: class end ceiling (v: REAL_64): REAL_64 -- Least integral greater than or equal to v. external "C signature (double): double use <math.h>" alias "ceil" ensure instance_free: class end dabs (v: REAL_64): REAL_64 -- Absolute of v. external "C signature (double): double use <math.h>" alias "fabs" ensure instance_free: class end note copyright: "Copyright (c) 1984-2018, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end -- class DOUBLE_MATH
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