qfrts.c

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/*

  Copyright (C) 2000, 2001 Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if 
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU General Public License along
  with this program; if not, write the Free Software Foundation, Inc., 59
  Temple Place - Suite 330, Boston MA 02111-1307, USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan

*/


#include <stdarg.h>
#include <cmplrs/host.h>

#ifdef MFEF77_C
        /* include these only if support for mfef77 ftn->c is needed */
#include <libftn.h>

long double __qmax(int argcnt, ...)
{
  long double  arg, maxarg;
  va_list ap;

  va_start(ap, argcnt);
  maxarg = va_arg(ap, double);
  while (--argcnt > 0) {
    arg = va_arg(ap, double);
    if (arg > maxarg) maxarg = arg;
  }  /* while */
  va_end(ap);
  return maxarg;
}  /* __qmax */

long double __qmin(int argcnt, ...)
{
  long double  arg, minarg;
  va_list ap;

  va_start(ap, argcnt);
  minarg = va_arg(ap, double);
  while (--argcnt > 0) {
    arg = va_arg(ap, double);
    if (arg < minarg) minarg = arg;
  }  /* while */
  va_end(ap);
  return minarg;
}  /* __qmin */

struct _cpx_float _cpx_make_float_from_long_double(struct _cpx_long_double q)
{
  struct _cpx_float t;
  t.r = q.r;
  t.i = q.i;
  return t;
}  /* _cpx_make_float_from_long_double */

struct _cpx_double _cpx_make_double_from_long_double(struct _cpx_long_double q)
{
  struct _cpx_double t;
  t.r = q.r;
  t.i = q.i;
  return t;
}  /* _cpx_make_double_from_long_double */

int _xeq_long_double(struct _cpx_long_double a, struct _cpx_long_double b)
{
  return a.r == b.r && a.i == b.i;
}  /* _xeq_long_double */

int _xne_long_double(struct _cpx_long_double a, struct _cpx_long_double b)
{
  return a.r != b.r || a.i != b.i;
}  /* _xne_long_double */

struct _cpx_long_double _cpx_long_double(long double r, long double i)
{
  struct _cpx_long_double t;
  t.r = r;
  t.i = i;
  return t;
}  /* _cpx_long_double */

struct _cpx_long_double _cpx_make_long_double_from_float(struct _cpx_float f)
{
  struct _cpx_long_double t;
  t.r = f.r;
  t.i = f.i;
  return t;
}  /* _cpx_make_long_double_from_float */

struct _cpx_long_double _cpx_make_long_double_from_double(struct _cpx_double d)
{
  struct _cpx_long_double t;
  t.r = d.r;
  t.i = d.i;
  return t;
}  /* _cpx_make_long_double_from_double */

struct _cpx_long_double _xnegate_long_double(struct _cpx_long_double a)
{
  struct _cpx_long_double t;
  t.r = -a.r;
  t.i = -a.i;
  return t;
}  /* _xnegate_long_double */

struct _cpx_long_double _xadd_long_double(struct _cpx_long_double a, struct _cpx_long_double b)
{
  struct _cpx_long_double t;
  t.r = a.r + b.r;
  t.i = a.i + b.i;
  return t;
}  /* _xadd_long_double */

struct _cpx_long_double _xsubtract_long_double(struct _cpx_long_double a, struct _cpx_long_double b)
{
  struct _cpx_long_double t;
  t.r = a.r - b.r;
  t.i = a.i - b.i;
  return t;
}  /* _xsubtract_long_double */

struct _cpx_long_double _xmultiply_long_double(struct _cpx_long_double a, struct _cpx_long_double b)
{
  struct _cpx_long_double t;
  t.r = a.r*b.r - a.i*b.i;
  t.i = a.i*b.r + a.r*b.i;
  return t;
}  /* _xmultiply_long_double */

struct _cpx_long_double _xdivide_long_double(struct _cpx_long_double a, struct _cpx_long_double b)
{
  struct _cpx_long_double t;
  long double d = b.r*b.r+b.i*b.i;
  t.r = (a.r*b.r+a.i*b.i)/d;
  t.i = (a.i*b.r-a.r*b.i)/d;
  return t;
}  /* _xdivide_long_double */

/* Hack alert:  The complex exponentation functions take a pointer to the
   result as the first parameter.  Since c_gen_be.c doesn't realize it's
   a complex exponentiation until it's already put out the left hand side
   of the assignment statement, it was easiest to just code these stub
   routines to call the real functions. */

struct _cpx_long_double pow_cqi_stub(struct _cpx_long_double *a, int *b)
{
struct _cpx_long_double temp;
__pow_cqi(&temp,a,b);
return temp;
}

struct _cpx_long_double pow_cql_stub(struct _cpx_long_double *a, long long *b)
{
struct _cpx_long_double temp;
__pow_cql(&temp,a,b);
return temp;
}

struct _cpx_long_double pow_cq_stub(struct _cpx_long_double *a, struct _cpx_long_double *b)
{
struct _cpx_long_double temp;
__cq_pow(&temp,a,b);
return temp;
}
#endif /* MFEF77_C */