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36 #include <types/simple.h>
38 #include "gmx_lapack.h"
41 F77_FUNC(slas2,SLAS2)(float *f,
50 float fhmin,fhmax,tmax,tmin,tmp1,tmp2;
53 fhmin = (fa<ha) ? fa : ha;
54 fhmax = (fa>ha) ? fa : ha;
56 if(fabs(fhmin)<GMX_FLOAT_MIN) {
58 if(fabs(fhmax)<GMX_FLOAT_MIN)
61 tmax = (fhmax>ga) ? fhmax : ga;
62 tmin = (fhmax<ga) ? fhmax : ga;
65 *ssmax = tmax*sqrt(1.0 + tmp1);
69 as = 1.0 + fhmin / fhmax;
70 at = (fhmax-fhmin) / fhmax;
73 c = 2.0 / ( sqrt(as*as+au) + sqrt(at*at+au) );
78 if(fabs(au)<GMX_FLOAT_MIN) {
79 *ssmin = (fhmin*fhmax)/ga;
82 as = 1.0 + fhmin / fhmax;
83 at = (fhmax-fhmin)/fhmax;
86 c = 1.0 / ( sqrt(1.0+tmp1*tmp1) + sqrt(1.0+tmp2*tmp2));
87 *ssmin = (fhmin*c)*au;
88 *ssmin = *ssmin + *ssmin;