#include "blaswrap.h" /* clctes.f -- translated by f2c (version 20061008). You must link the resulting object file with libf2c: on Microsoft Windows system, link with libf2c.lib; on Linux or Unix systems, link with .../path/to/libf2c.a -lm or, if you install libf2c.a in a standard place, with -lf2c -lm -- in that order, at the end of the command line, as in cc *.o -lf2c -lm Source for libf2c is in /netlib/f2c/libf2c.zip, e.g., http://www.netlib.org/f2c/libf2c.zip */ #include "f2c.h" /* Table of constant values */ static real c_b3 = 1.f; logical clctes_(complex *z__, complex *d__) { /* System generated locals */ real r__1, r__2, r__3, r__4; logical ret_val; /* Builtin functions */ double r_imag(complex *), r_sign(real *, real *); /* Local variables */ static real zmax; /* -- LAPACK test routine (version 3.1) -- Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. November 2006 Purpose ======= CLCTES returns .TRUE. if the eigenvalue Z/D is to be selected (specifically, in this subroutine, if the real part of the eigenvalue is negative), and otherwise it returns .FALSE.. It is used by the test routine CDRGES to test whether the driver routine CGGES succesfully sorts eigenvalues. Arguments ========= Z (input) COMPLEX The numerator part of a complex eigenvalue Z/D. D (input) COMPLEX The denominator part of a complex eigenvalue Z/D. ===================================================================== */ if (d__->r == 0.f && d__->i == 0.f) { ret_val = z__->r < 0.f; } else { if (z__->r == 0.f || d__->r == 0.f) { r__1 = r_imag(z__); r__2 = r_imag(d__); ret_val = r_sign(&c_b3, &r__1) != r_sign(&c_b3, &r__2); } else if (r_imag(z__) == 0.f || r_imag(d__) == 0.f) { r__1 = z__->r; r__2 = d__->r; ret_val = r_sign(&c_b3, &r__1) != r_sign(&c_b3, &r__2); } else { /* Computing MAX */ r__3 = (r__1 = z__->r, dabs(r__1)), r__4 = (r__2 = r_imag(z__), dabs(r__2)); zmax = dmax(r__3,r__4); ret_val = z__->r / zmax * d__->r + r_imag(z__) / zmax * r_imag( d__) < 0.f; } } return ret_val; /* End of CLCTES */ } /* clctes_ */