crotg man page on OpenIndiana

crotg man page on OpenIndiana

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crotg(3P)		    Sun Performance Library		     crotg(3P)

NAME
       crotg - Construct a Given's plane rotation

SYNOPSIS
       SUBROUTINE CROTG(A, B, C, S)

       COMPLEX A, B, S
       REAL C

       SUBROUTINE CROTG_64(A, B, C, S)

       COMPLEX A, B, S
       REAL C

   F95 INTERFACE
       SUBROUTINE ROTG(A, B, C, S)

       COMPLEX :: A, B, S
       REAL :: C

       SUBROUTINE ROTG_64(A, B, C, S)

       COMPLEX :: A, B, S
       REAL :: C

   C INTERFACE
       #include <sunperf.h>

       void crotg(complex *a, complex *b, float *c, complex *s);

       void crotg_64(complex *a, complex *b, float *c, complex *s);

PURPOSE
       crotg  Construct	 a Given's plane rotation that will annihilate an ele‐
       ment of a vector.

ARGUMENTS
       A (input/output)
		 On entry, A contains the entry in the first vector that  cor‐
		 responds  to the element to be annihilated in the second vec‐
		 tor.  On exit, contains the nonzero element  of  the  rotated
		 vector.

       B (input)
		 On  entry, B contains the entry to be annihilated in the sec‐
		 ond vector.  Unchanged on exit.

       C (output)
		 On exit, C and S are the elements of the rotation matrix that
		 will be applied to annihilate B.

       S (output)
		 On exit, C and S are the elements of the rotation matrix that
		 will be applied to annihilate B.

				  6 Mar 2009			     crotg(3P)

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