atan2.h File Reference

atan2 function; returns the calculation of the arctan function on all the elements of one input pack operand More...

#include <IPSDKUtil/IPSDKUtilExports.h>
#include <IPSDKUtil/InstructionSet/Arithmetic/detail/Atan2Pack.h>
#include <IPSDKUtil/InstructionSet/PromotedType.h>
#include <IPSDKUtil/Tools/ForceInline.h>

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Namespaces
	ipsdk
	Main namespace for IPSDK library.
	ipsdk::simd
	Namespace agregating IPSDK SIMD routines and classes.

Functions
template<eInstructionSet::domain instructionSet, class PackT >
IPSDK_FORCEINLINE PackT	ipsdk::simd::atan2 (const PackT &y, const PackT &x)
template<eInstructionSet::domain instructionSet, class PackT >
IPSDK_FORCEINLINE void	ipsdk::simd::atan2 (const PackT &y, const PackT &x, PackT &out)

Detailed Description

atan2 function; returns the calculation of the arctan function on all the elements of one input pack operand

Author

H. Delestre

Date

2014/11/17

Copyright

2014 Reactiv'IP, all right reserved.

given a pack Y with Y = {y1, ..., yn}, and a pack X with X = {x1, ..., xn}, atan2(Y, X) returns RES = {res1, ... resn}, so that, for each i in [1;n]:

• resi belongs to range [-pi; pi]
• tan(resi) = yi/xi
• sign(resi) = sign(yi)
• sign(abs(resi) - pi/2) = sign(xi)