* functions. */
/*
- * GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2005 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <vector>
// exp(n*Pi*I/2) -> {+1|+I|-1|-I}
const ex TwoExOverPiI=(_ex2*x)/(Pi*I);
if (TwoExOverPiI.info(info_flags::integer)) {
- const numeric z = mod(ex_to<numeric>(TwoExOverPiI),_num4);
- if (z.is_equal(_num0))
+ const numeric z = mod(ex_to<numeric>(TwoExOverPiI),*_num4_p);
+ if (z.is_equal(*_num0_p))
return _ex1;
- if (z.is_equal(_num1))
+ if (z.is_equal(*_num1_p))
return ex(I);
- if (z.is_equal(_num2))
+ if (z.is_equal(*_num2_p))
return _ex_1;
- if (z.is_equal(_num3))
+ if (z.is_equal(*_num3_p))
return ex(-I);
}
if (x.info(info_flags::numeric)) {
if (x.is_zero()) // log(0) -> infinity
throw(pole_error("log_eval(): log(0)",0));
- if (x.info(info_flags::real) && x.info(info_flags::negative))
- //if (x.info(info_flags::rational) && x.info(info_flags::negative))
+ if (x.info(info_flags::rational) && x.info(info_flags::negative))
return (log(-x)+I*Pi);
if (x.is_equal(_ex1)) // log(1) -> 0
return _ex0;
if (x.is_equal(I)) // log(I) -> Pi*I/2
- return (Pi*I*_num1_2);
+ return (Pi*I*_ex1_2);
if (x.is_equal(-I)) // log(-I) -> -Pi*I/2
- return (Pi*I*_num_1_2);
+ return (Pi*I*_ex_1_2);
// log(float) -> float
if (!x.info(info_flags::crational))
const ex SixtyExOverPi = _ex60*x/Pi;
ex sign = _ex1;
if (SixtyExOverPi.info(info_flags::integer)) {
- numeric z = mod(ex_to<numeric>(SixtyExOverPi),_num120);
- if (z>=_num60) {
+ numeric z = mod(ex_to<numeric>(SixtyExOverPi),*_num120_p);
+ if (z>=*_num60_p) {
// wrap to interval [0, Pi)
- z -= _num60;
+ z -= *_num60_p;
sign = _ex_1;
}
- if (z>_num30) {
+ if (z>*_num30_p) {
// wrap to interval [0, Pi/2)
- z = _num60-z;
+ z = *_num60_p-z;
}
- if (z.is_equal(_num0)) // sin(0) -> 0
+ if (z.is_equal(*_num0_p)) // sin(0) -> 0
return _ex0;
- if (z.is_equal(_num5)) // sin(Pi/12) -> sqrt(6)/4*(1-sqrt(3)/3)
+ if (z.is_equal(*_num5_p)) // sin(Pi/12) -> sqrt(6)/4*(1-sqrt(3)/3)
return sign*_ex1_4*sqrt(_ex6)*(_ex1+_ex_1_3*sqrt(_ex3));
- if (z.is_equal(_num6)) // sin(Pi/10) -> sqrt(5)/4-1/4
+ if (z.is_equal(*_num6_p)) // sin(Pi/10) -> sqrt(5)/4-1/4
return sign*(_ex1_4*sqrt(_ex5)+_ex_1_4);
- if (z.is_equal(_num10)) // sin(Pi/6) -> 1/2
+ if (z.is_equal(*_num10_p)) // sin(Pi/6) -> 1/2
return sign*_ex1_2;
- if (z.is_equal(_num15)) // sin(Pi/4) -> sqrt(2)/2
+ if (z.is_equal(*_num15_p)) // sin(Pi/4) -> sqrt(2)/2
return sign*_ex1_2*sqrt(_ex2);
- if (z.is_equal(_num18)) // sin(3/10*Pi) -> sqrt(5)/4+1/4
+ if (z.is_equal(*_num18_p)) // sin(3/10*Pi) -> sqrt(5)/4+1/4
return sign*(_ex1_4*sqrt(_ex5)+_ex1_4);
- if (z.is_equal(_num20)) // sin(Pi/3) -> sqrt(3)/2
+ if (z.is_equal(*_num20_p)) // sin(Pi/3) -> sqrt(3)/2
return sign*_ex1_2*sqrt(_ex3);
- if (z.is_equal(_num25)) // sin(5/12*Pi) -> sqrt(6)/4*(1+sqrt(3)/3)
+ if (z.is_equal(*_num25_p)) // sin(5/12*Pi) -> sqrt(6)/4*(1+sqrt(3)/3)
return sign*_ex1_4*sqrt(_ex6)*(_ex1+_ex1_3*sqrt(_ex3));
- if (z.is_equal(_num30)) // sin(Pi/2) -> 1
+ if (z.is_equal(*_num30_p)) // sin(Pi/2) -> 1
return sign;
}
const ex SixtyExOverPi = _ex60*x/Pi;
ex sign = _ex1;
if (SixtyExOverPi.info(info_flags::integer)) {
- numeric z = mod(ex_to<numeric>(SixtyExOverPi),_num120);
- if (z>=_num60) {
+ numeric z = mod(ex_to<numeric>(SixtyExOverPi),*_num120_p);
+ if (z>=*_num60_p) {
// wrap to interval [0, Pi)
- z = _num120-z;
+ z = *_num120_p-z;
}
- if (z>=_num30) {
+ if (z>=*_num30_p) {
// wrap to interval [0, Pi/2)
- z = _num60-z;
+ z = *_num60_p-z;
sign = _ex_1;
}
- if (z.is_equal(_num0)) // cos(0) -> 1
+ if (z.is_equal(*_num0_p)) // cos(0) -> 1
return sign;
- if (z.is_equal(_num5)) // cos(Pi/12) -> sqrt(6)/4*(1+sqrt(3)/3)
+ if (z.is_equal(*_num5_p)) // cos(Pi/12) -> sqrt(6)/4*(1+sqrt(3)/3)
return sign*_ex1_4*sqrt(_ex6)*(_ex1+_ex1_3*sqrt(_ex3));
- if (z.is_equal(_num10)) // cos(Pi/6) -> sqrt(3)/2
+ if (z.is_equal(*_num10_p)) // cos(Pi/6) -> sqrt(3)/2
return sign*_ex1_2*sqrt(_ex3);
- if (z.is_equal(_num12)) // cos(Pi/5) -> sqrt(5)/4+1/4
+ if (z.is_equal(*_num12_p)) // cos(Pi/5) -> sqrt(5)/4+1/4
return sign*(_ex1_4*sqrt(_ex5)+_ex1_4);
- if (z.is_equal(_num15)) // cos(Pi/4) -> sqrt(2)/2
+ if (z.is_equal(*_num15_p)) // cos(Pi/4) -> sqrt(2)/2
return sign*_ex1_2*sqrt(_ex2);
- if (z.is_equal(_num20)) // cos(Pi/3) -> 1/2
+ if (z.is_equal(*_num20_p)) // cos(Pi/3) -> 1/2
return sign*_ex1_2;
- if (z.is_equal(_num24)) // cos(2/5*Pi) -> sqrt(5)/4-1/4x
+ if (z.is_equal(*_num24_p)) // cos(2/5*Pi) -> sqrt(5)/4-1/4x
return sign*(_ex1_4*sqrt(_ex5)+_ex_1_4);
- if (z.is_equal(_num25)) // cos(5/12*Pi) -> sqrt(6)/4*(1-sqrt(3)/3)
+ if (z.is_equal(*_num25_p)) // cos(5/12*Pi) -> sqrt(6)/4*(1-sqrt(3)/3)
return sign*_ex1_4*sqrt(_ex6)*(_ex1+_ex_1_3*sqrt(_ex3));
- if (z.is_equal(_num30)) // cos(Pi/2) -> 0
+ if (z.is_equal(*_num30_p)) // cos(Pi/2) -> 0
return _ex0;
}
const ex SixtyExOverPi = _ex60*x/Pi;
ex sign = _ex1;
if (SixtyExOverPi.info(info_flags::integer)) {
- numeric z = mod(ex_to<numeric>(SixtyExOverPi),_num60);
- if (z>=_num60) {
+ numeric z = mod(ex_to<numeric>(SixtyExOverPi),*_num60_p);
+ if (z>=*_num60_p) {
// wrap to interval [0, Pi)
- z -= _num60;
+ z -= *_num60_p;
}
- if (z>=_num30) {
+ if (z>=*_num30_p) {
// wrap to interval [0, Pi/2)
- z = _num60-z;
+ z = *_num60_p-z;
sign = _ex_1;
}
- if (z.is_equal(_num0)) // tan(0) -> 0
+ if (z.is_equal(*_num0_p)) // tan(0) -> 0
return _ex0;
- if (z.is_equal(_num5)) // tan(Pi/12) -> 2-sqrt(3)
+ if (z.is_equal(*_num5_p)) // tan(Pi/12) -> 2-sqrt(3)
return sign*(_ex2-sqrt(_ex3));
- if (z.is_equal(_num10)) // tan(Pi/6) -> sqrt(3)/3
+ if (z.is_equal(*_num10_p)) // tan(Pi/6) -> sqrt(3)/3
return sign*_ex1_3*sqrt(_ex3);
- if (z.is_equal(_num15)) // tan(Pi/4) -> 1
+ if (z.is_equal(*_num15_p)) // tan(Pi/4) -> 1
return sign;
- if (z.is_equal(_num20)) // tan(Pi/3) -> sqrt(3)
+ if (z.is_equal(*_num20_p)) // tan(Pi/3) -> sqrt(3)
return sign*sqrt(_ex3);
- if (z.is_equal(_num25)) // tan(5/12*Pi) -> 2+sqrt(3)
+ if (z.is_equal(*_num25_p)) // tan(5/12*Pi) -> 2+sqrt(3)
return sign*(sqrt(_ex3)+_ex2);
- if (z.is_equal(_num30)) // tan(Pi/2) -> infinity
+ if (z.is_equal(*_num30_p)) // tan(Pi/2) -> infinity
throw (pole_error("tan_eval(): simple pole",1));
}
// asin(1) -> Pi/2
if (x.is_equal(_ex1))
- return _num1_2*Pi;
+ return _ex1_2*Pi;
// asin(-1/2) -> -Pi/6
if (x.is_equal(_ex_1_2))
// asin(-1) -> -Pi/2
if (x.is_equal(_ex_1))
- return _num_1_2*Pi;
+ return _ex_1_2*Pi;
// asin(float) -> float
if (!x.info(info_flags::crational))