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unwrapping ArcTan

• To: mathgroup at smc.vnet.net
• Subject: [mg13663] unwrapping ArcTan
• From: Linda Rogers <ljrogers at sulcus.berkeley.edu>
• Date: Mon, 10 Aug 1998 14:03:11 -0700
• Sender: owner-wri-mathgroup at wolfram.com

Is there code for "unwrapping" the ArcTan, so that one has a smooth
function of phase that increases, adding 2 Pi every time a cycle is
completed?  
Thanks,
Linda Rogers