f2clib.c File Reference

#include "f2c.h"
#include "math.h"

Include dependency graph for f2clib.c:

Go to the source code of this file.

Functions
integer	i_nint (real *x)
integer	pow_ii (integer *ap, integer *bp)
double	r_sign (real *a, real *b)

Function Documentation

i_nint()

integer i_nint

(

real *

x

)

Definition at line 80 of file f2clib.c.

Referenced by placea_(), r_sign(), voicin_(), and vparms_().

{
return( (integer)((*x)>=0 ?
   floor(*x + .5) : -floor(.5 - *x)) );
}

pow_ii()

integer pow_ii	(	integer *	ap,
		integer *	bp
	)

Definition at line 30 of file f2clib.c.

References a, b, and r_sign().

Referenced by decode_(), and encode_().

{
   integer pow, x, n;
   unsigned long u;

   x = *ap;
   n = *bp;

   if (n <= 0) {
      if (n == 0 || x == 1)
         return 1;
      if (x != -1)
         return x == 0 ? 0 : 1/x;
      n = -n;
      }
   u = n;
   for(pow = 1; ; )
      {
      if(u & 01)
         pow *= x;
      if(u >>= 1)
         x *= x;
      else
         break;
      }
   return(pow);
   }

r_sign()

double r_sign	(	real *	a,
		real *	b
	)

Definition at line 64 of file f2clib.c.

References a, and i_nint().

Referenced by onset_(), pow_ii(), and vparms_().

{
double x;
x = (*a >= 0 ? *a : - *a);
return( *b >= 0 ? x : -x);
}