Inverse tangent (four quadrant)
MT, SSE2
| FwStatus | fwsAtan2_32f_A11 | ( | const Fw32f * pSrc1, const Fw32f * pSrc2, Fw32f * pDst, int len ); | |
| FwStatus | fwsAtan2_32f_A21 | ( | const Fw32f * pSrc1, const Fw32f * pSrc2, Fw32f * pDst, int len ); | |
| FwStatus | fwsAtan2_32f_A24 | ( | const Fw32f * pSrc1, const Fw32f * pSrc2, Fw32f * pDst, int len ); | |
| FwStatus | fwsAtan2_64f_A50 | ( | const Fw64f * pSrc1, const Fw64f * pSrc2, Fw64f * pDst, int len ); | |
| FwStatus | fwsAtan2_64f_A53 | ( | const Fw64f * pSrc1, const Fw64f * pSrc2, Fw64f * pDst, int len ); |
| len | Specifies the number of elements in a buffer. | |
| pDst | Pointer to a destination buffer. | |
| pSrc1 | Pointer to source buffer one. | |
| pSrc2 | Pointer to source buffer two. |
These functions step through vector elements in two input buffers, calculate the inverse tangent of the y and x buffer elements, and write the results to a destination buffer.
Buffer 1 contains y values and buffer 2 contains x values.
The operation of this function is similar to calculating the arctangent of y/x, except that the signs of both arguments determine the quadrant of the result.
Results are in the range (-pi, pi).