[Initial release from Ruben Scardovelli
stephane.zaleski@upmc.fr**20070209175414
 
 This is a simple rewrite of the original routine written by Eugenio Aulisa
 (DIENCA, Universita di Bologna)
 
 
] [Fix for obvious bug
Stephane Popinet <popinet@users.sf.net>**20070212001748] 
[Added 2D
stephane.zaleski@upmc.fr**20070228105530] 
[bug found by S. Popinet when t0 < t1 = t2
zaleski@lmm.jussieu.fr (on mac)**20070618130357] 
[Stephane Popinet's current version
zaleski@lmm.jussieu.fr (on mac)**20070618130946] 
[removed unnecessary definitions
zaleski@lmm.jussieu.fr (on mac)**20070618131515] 
[minor changes for testing darcs
Stephane Zaleski <stephane.zaleski@upmc.fr>**20121125184909
 Ignore-this: 3098393fd612fc41507491d60dac8417
]