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author | Diego Novillo <dnovillo@gcc.gnu.org> | 2004-05-13 02:41:07 -0400 |
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committer | Diego Novillo <dnovillo@gcc.gnu.org> | 2004-05-13 02:41:07 -0400 |
commit | 6de9cd9a886ea695aa892c3c7c07818a7b7e9e6f (patch) | |
tree | a2568888a519c077427b133de9ece5879a8484a5 /libgfortran/generated/trig_c8.c | |
parent | ac1a20aec53364d77f3bdff94a2a0a06840e0fe9 (diff) | |
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Merge tree-ssa-20020619-branch into mainline.
From-SVN: r81764
Diffstat (limited to 'libgfortran/generated/trig_c8.c')
-rw-r--r-- | libgfortran/generated/trig_c8.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/libgfortran/generated/trig_c8.c b/libgfortran/generated/trig_c8.c new file mode 100644 index 0000000..cea4872 --- /dev/null +++ b/libgfortran/generated/trig_c8.c @@ -0,0 +1,71 @@ +/* Complex trig functions + Copyright 2002 Free Software Foundation, Inc. + Contributed by Paul Brook <paul@nowt.org> + +This file is part of the GNU Fortran 95 runtime library (libgfor). + +Libgfortran is free software; you can redistribute it and/or +modify it under the terms of the GNU Lesser General Public +License as published by the Free Software Foundation; either +version 2.1 of the License, or (at your option) any later version. + +Libgfortran is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public +License along with libgfor; see the file COPYING.LIB. If not, +write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ +#include <math.h> +#include "libgfortran.h" + + +/* Complex number z = a + ib. */ + +/* sin(z) = sin(a)cosh(b) + icos(a)sinh(b) */ +GFC_COMPLEX_8 +csin (GFC_COMPLEX_8 a) +{ + GFC_REAL_8 r; + GFC_REAL_8 i; + GFC_COMPLEX_8 v; + + r = REALPART (a); + i = IMAGPART (a); + COMPLEX_ASSIGN (v, sin (r) * cosh (i), cos (r) * sinh (i)); + return v; +} + +/* cos(z) = cos(a)cosh(b) - isin(a)sinh(b) */ +GFC_COMPLEX_8 +ccos (GFC_COMPLEX_8 a) +{ + GFC_REAL_8 r; + GFC_REAL_8 i; + GFC_COMPLEX_8 v; + + r = REALPART (a); + i = IMAGPART (a); + COMPLEX_ASSIGN (v, cos (r) * cosh (i), - (sin (r) * sinh (i))); + return v; +} + +/* tan(z) = (tan(a) + itanh(b)) / (1 - itan(a)tanh(b)) */ +GFC_COMPLEX_8 +ctan (GFC_COMPLEX_8 a) +{ + GFC_REAL_8 rt; + GFC_REAL_8 it; + GFC_COMPLEX_8 n; + GFC_COMPLEX_8 d; + + rt = tan (REALPART (a)); + it = tanh (IMAGPART (a)); + COMPLEX_ASSIGN (n, rt, it); + COMPLEX_ASSIGN (d , 1, - (rt * it)); + + return n / d; +} + |