1extern float A[], B[];
2extern float MAXNUMF;
3float chbevlf(float, float *, int);
4float expf(float), i1f(float), logf(float), sqrtf(float);
5
6float k1f(float xx)
7{
8  float x, y;
9
10  x = xx;
11  if( x <= 2.0 )
12    {
13      y = x * x - 2.0;
14      y =  logf( 0.5f * x ) * i1f(x)  +  chbevlf( y, A, 7 ) / x;
15      return( y );
16    }
17  return(  expf(-x) * chbevlf( (float)(8.0/x - 2.0), B, 10 ) / sqrtf(x) );
18}
19