/*
 * $Id: p_header,v 1.4 2000/11/27 01:57:01 keiko Exp $
 */

#include <stdio.h>
#include "ruby.h"
#include "libtinyf2c.h"
#include "narray.h"

#define DFLT_SIZE 32

extern char    *dcl_obj2ccharary(VALUE, int, int);
extern integer *dcl_obj2cintegerary(VALUE);
extern real    *dcl_obj2crealary(VALUE);
extern complex *dcl_obj2ccomplexary(VALUE);
extern logical *dcl_obj2clogicalary(VALUE);

extern VALUE dcl_ccharary2obj(char *, int, int);
extern VALUE dcl_cintegerary2obj(integer *, int, int, int *);
extern VALUE dcl_crealary2obj(real *, int, int, int *);
extern VALUE dcl_ccomplexary2obj(complex *, int, char *);
extern VALUE dcl_clogicalary2obj(logical *, int, int, int *);

extern void dcl_freeccharary(char *);
extern void dcl_freecintegerary(integer *);
extern void dcl_freecrealary(real *);
extern void dcl_freeccomplexary(complex *);
extern void dcl_freeclogicalary(logical *);

/* for functions which return doublereal */
/* fnclib */
extern doublereal rd2r_(real *);
extern doublereal rr2d_(real *);
extern doublereal rexp_(real *, integer *, integer *);
extern doublereal rfpi_(void);
extern doublereal rmod_(real *, real *);
/* gnmlib */
extern doublereal rgnlt_(real *);
extern doublereal rgnle_(real *);
extern doublereal rgngt_(real *);
extern doublereal rgnge_(real *);
/* rfalib */
extern doublereal rmax_(real *, integer *, integer *);
extern doublereal rmin_(real *, integer *, integer *);
extern doublereal rsum_(real *, integer *, integer *);
extern doublereal rave_(real *, integer *, integer *);
extern doublereal rvar_(real *, integer *, integer *);
extern doublereal rstd_(real *, integer *, integer *);
extern doublereal rrms_(real *, integer *, integer *);
extern doublereal ramp_(real *, integer *, integer *);
/* rfblib */
extern doublereal rprd_(real *, real *, integer *, integer *, integer *);
extern doublereal rcov_(real *, real *, integer *, integer *, integer *);
extern doublereal rcor_(real *, real *, integer *, integer *, integer *);


extern VALUE mDCL;

static VALUE
dcl_cfftb(obj, n, c, wsave)
    VALUE obj, n, c, wsave;
{
    integer i_n;
    real *io_c;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(c) == T_FLOAT) {
      c = rb_Array(c);
    }
    /* if ((TYPE(c) != T_ARRAY) && 
           (rb_obj_is_kind_of(c, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_c = dcl_obj2crealary(c);
    i_wsave = dcl_obj2crealary(wsave);


    cfftb_(&i_n, io_c, i_wsave);

    {int array_shape[1] = {2*i_n};
     c = dcl_crealary2obj(io_c, (2*i_n), 1, array_shape);
    }

    dcl_freecrealary(io_c);
    dcl_freecrealary(i_wsave);

    return c;

}

static VALUE
dcl_cfftf(obj, n, c, wsave)
    VALUE obj, n, c, wsave;
{
    integer i_n;
    real *io_c;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(c) == T_FLOAT) {
      c = rb_Array(c);
    }
    /* if ((TYPE(c) != T_ARRAY) && 
           (rb_obj_is_kind_of(c, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_c = dcl_obj2crealary(c);
    i_wsave = dcl_obj2crealary(wsave);


    cfftf_(&i_n, io_c, i_wsave);

    {int array_shape[1] = {2*i_n};
     c = dcl_crealary2obj(io_c, (2*i_n), 1, array_shape);
    }

    dcl_freecrealary(io_c);
    dcl_freecrealary(i_wsave);

    return c;

}

static VALUE
dcl_cffti(obj, n)
    VALUE obj, n;
{
    integer i_n;
    real *o_wsave;
    VALUE wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }

    i_n = NUM2INT(n);

    o_wsave= ALLOCA_N(real, (4*i_n+15));

    cffti_(&i_n, o_wsave);

    {int array_shape[1] = {4*i_n+15};
     wsave = dcl_crealary2obj(o_wsave, (4*i_n+15), 1, array_shape);
    }


    return wsave;

}

static VALUE
dcl_cosqb(obj, n, x, wsave)
    VALUE obj, n, x, wsave;
{
    integer i_n;
    real *io_x;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(x) == T_FLOAT) {
      x = rb_Array(x);
    }
    /* if ((TYPE(x) != T_ARRAY) && 
           (rb_obj_is_kind_of(x, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_x = dcl_obj2crealary(x);
    i_wsave = dcl_obj2crealary(wsave);


    cosqb_(&i_n, io_x, i_wsave);

    {int array_shape[1] = {i_n};
     x = dcl_crealary2obj(io_x, (i_n), 1, array_shape);
    }

    dcl_freecrealary(io_x);
    dcl_freecrealary(i_wsave);

    return x;

}

static VALUE
dcl_cosqf(obj, n, x, wsave)
    VALUE obj, n, x, wsave;
{
    integer i_n;
    real *io_x;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(x) == T_FLOAT) {
      x = rb_Array(x);
    }
    /* if ((TYPE(x) != T_ARRAY) && 
           (rb_obj_is_kind_of(x, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_x = dcl_obj2crealary(x);
    i_wsave = dcl_obj2crealary(wsave);


    cosqf_(&i_n, io_x, i_wsave);

    {int array_shape[1] = {i_n};
     x = dcl_crealary2obj(io_x, (i_n), 1, array_shape);
    }

    dcl_freecrealary(io_x);
    dcl_freecrealary(i_wsave);

    return x;

}

static VALUE
dcl_cosqi(obj, n)
    VALUE obj, n;
{
    integer i_n;
    real *o_wsave;
    VALUE wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }

    i_n = NUM2INT(n);

    o_wsave= ALLOCA_N(real, (3*i_n+15));

    cosqi_(&i_n, o_wsave);

    {int array_shape[1] = {3*i_n+15};
     wsave = dcl_crealary2obj(o_wsave, (3*i_n+15), 1, array_shape);
    }


    return wsave;

}

static VALUE
dcl_cost(obj, n, x, wsave)
    VALUE obj, n, x, wsave;
{
    integer i_n;
    real *io_x;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(x) == T_FLOAT) {
      x = rb_Array(x);
    }
    /* if ((TYPE(x) != T_ARRAY) && 
           (rb_obj_is_kind_of(x, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_x = dcl_obj2crealary(x);
    i_wsave = dcl_obj2crealary(wsave);


    cost_(&i_n, io_x, i_wsave);

    {int array_shape[1] = {i_n};
     x = dcl_crealary2obj(io_x, (i_n), 1, array_shape);
    }

    dcl_freecrealary(io_x);
    dcl_freecrealary(i_wsave);

    return x;

}

static VALUE
dcl_costi(obj, n)
    VALUE obj, n;
{
    integer i_n;
    real *o_wsave;
    VALUE wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }

    i_n = NUM2INT(n);

    o_wsave= ALLOCA_N(real, (3*i_n+15));

    costi_(&i_n, o_wsave);

    {int array_shape[1] = {3*i_n+15};
     wsave = dcl_crealary2obj(o_wsave, (3*i_n+15), 1, array_shape);
    }


    return wsave;

}

static VALUE
dcl_ezfftb(obj, n, azero, a, b, wsave)
    VALUE obj, n, azero, a, b, wsave;
{
    integer i_n;
    real *o_r;
    real i_azero;
    real *i_a;
    real *i_b;
    real *i_wsave;
    VALUE r;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(azero) != T_FLOAT) {
      azero = rb_funcall(azero, rb_intern("to_f"), 0);
    }
    if (TYPE(a) == T_FLOAT) {
      a = rb_Array(a);
    }
    /* if ((TYPE(a) != T_ARRAY) && 
           (rb_obj_is_kind_of(a, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(b) == T_FLOAT) {
      b = rb_Array(b);
    }
    /* if ((TYPE(b) != T_ARRAY) && 
           (rb_obj_is_kind_of(b, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    i_azero = (real)NUM2DBL(azero);
    i_a = dcl_obj2crealary(a);
    i_b = dcl_obj2crealary(b);
    i_wsave = dcl_obj2crealary(wsave);

    o_r= ALLOCA_N(real, (i_n));

    ezfftb_(&i_n, o_r, &i_azero, i_a, i_b, i_wsave);

    {int array_shape[1] = {i_n};
     r = dcl_crealary2obj(o_r, (i_n), 1, array_shape);
    }

    dcl_freecrealary(i_a);
    dcl_freecrealary(i_b);
    dcl_freecrealary(i_wsave);

    return r;

}

static VALUE
dcl_ezfftf(obj, n, r, wsave)
    VALUE obj, n, r, wsave;
{
    integer i_n;
    real *i_r;
    real o_azero;
    real *o_a;
    real *o_b;
    real *i_wsave;
    VALUE azero;
    VALUE a;
    VALUE b;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(r) == T_FLOAT) {
      r = rb_Array(r);
    }
    /* if ((TYPE(r) != T_ARRAY) && 
           (rb_obj_is_kind_of(r, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    i_r = dcl_obj2crealary(r);
    i_wsave = dcl_obj2crealary(wsave);

    o_a= ALLOCA_N(real, (i_n/2));
    o_b= ALLOCA_N(real, (i_n/2));

    ezfftf_(&i_n, i_r, &o_azero, o_a, o_b, i_wsave);

    azero = rb_float_new((double)o_azero);
    {int array_shape[1] = {i_n/2};
     a = dcl_crealary2obj(o_a, (i_n/2), 1, array_shape);
    }
    {int array_shape[1] = {i_n/2};
     b = dcl_crealary2obj(o_b, (i_n/2), 1, array_shape);
    }

    dcl_freecrealary(i_r);
    dcl_freecrealary(i_wsave);

    return rb_ary_new3(3, azero, a, b);

}

static VALUE
dcl_ezffti(obj, n)
    VALUE obj, n;
{
    integer i_n;
    real *o_wsave;
    VALUE wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }

    i_n = NUM2INT(n);

    o_wsave= ALLOCA_N(real, (3*i_n+15));

    ezffti_(&i_n, o_wsave);

    {int array_shape[1] = {3*i_n+15};
     wsave = dcl_crealary2obj(o_wsave, (3*i_n+15), 1, array_shape);
    }


    return wsave;

}

static VALUE
dcl_rfftb(obj, n, r, wsave)
    VALUE obj, n, r, wsave;
{
    integer i_n;
    real *io_r;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(r) == T_FLOAT) {
      r = rb_Array(r);
    }
    /* if ((TYPE(r) != T_ARRAY) && 
           (rb_obj_is_kind_of(r, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_r = dcl_obj2crealary(r);
    i_wsave = dcl_obj2crealary(wsave);


    rfftb_(&i_n, io_r, i_wsave);

    {int array_shape[1] = {i_n};
     r = dcl_crealary2obj(io_r, (i_n), 1, array_shape);
    }

    dcl_freecrealary(io_r);
    dcl_freecrealary(i_wsave);

    return r;

}

static VALUE
dcl_rfftf(obj, n, r, wsave)
    VALUE obj, n, r, wsave;
{
    integer i_n;
    real *io_r;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(r) == T_FLOAT) {
      r = rb_Array(r);
    }
    /* if ((TYPE(r) != T_ARRAY) && 
           (rb_obj_is_kind_of(r, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_r = dcl_obj2crealary(r);
    i_wsave = dcl_obj2crealary(wsave);


    rfftf_(&i_n, io_r, i_wsave);

    {int array_shape[1] = {i_n};
     r = dcl_crealary2obj(io_r, (i_n), 1, array_shape);
    }

    dcl_freecrealary(io_r);
    dcl_freecrealary(i_wsave);

    return r;

}

static VALUE
dcl_rffti(obj, n)
    VALUE obj, n;
{
    integer i_n;
    real *o_wsave;
    VALUE wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }

    i_n = NUM2INT(n);

    o_wsave= ALLOCA_N(real, (2*i_n+15));

    rffti_(&i_n, o_wsave);

    {int array_shape[1] = {2*i_n+15};
     wsave = dcl_crealary2obj(o_wsave, (2*i_n+15), 1, array_shape);
    }


    return wsave;

}

static VALUE
dcl_sinqb(obj, n, x, wsave)
    VALUE obj, n, x, wsave;
{
    integer i_n;
    real *io_x;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(x) == T_FLOAT) {
      x = rb_Array(x);
    }
    /* if ((TYPE(x) != T_ARRAY) && 
           (rb_obj_is_kind_of(x, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_x = dcl_obj2crealary(x);
    i_wsave = dcl_obj2crealary(wsave);


    sinqb_(&i_n, io_x, i_wsave);

    {int array_shape[1] = {i_n};
     x = dcl_crealary2obj(io_x, (i_n), 1, array_shape);
    }

    dcl_freecrealary(io_x);
    dcl_freecrealary(i_wsave);

    return x;

}

static VALUE
dcl_sinqf(obj, n, x, wsave)
    VALUE obj, n, x, wsave;
{
    integer i_n;
    real *io_x;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(x) == T_FLOAT) {
      x = rb_Array(x);
    }
    /* if ((TYPE(x) != T_ARRAY) && 
           (rb_obj_is_kind_of(x, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_x = dcl_obj2crealary(x);
    i_wsave = dcl_obj2crealary(wsave);


    sinqf_(&i_n, io_x, i_wsave);

    {int array_shape[1] = {i_n};
     x = dcl_crealary2obj(io_x, (i_n), 1, array_shape);
    }

    dcl_freecrealary(io_x);
    dcl_freecrealary(i_wsave);

    return x;

}

static VALUE
dcl_sinqi(obj, n)
    VALUE obj, n;
{
    integer i_n;
    real *o_wsave;
    VALUE wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }

    i_n = NUM2INT(n);

    o_wsave= ALLOCA_N(real, (3*i_n+15));

    sinqi_(&i_n, o_wsave);

    {int array_shape[1] = {3*i_n+15};
     wsave = dcl_crealary2obj(o_wsave, (3*i_n+15), 1, array_shape);
    }


    return wsave;

}

static VALUE
dcl_sint(obj, n, x, wsave)
    VALUE obj, n, x, wsave;
{
    integer i_n;
    real *io_x;
    real *i_wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }
    if (TYPE(x) == T_FLOAT) {
      x = rb_Array(x);
    }
    /* if ((TYPE(x) != T_ARRAY) && 
           (rb_obj_is_kind_of(x, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */
    if (TYPE(wsave) == T_FLOAT) {
      wsave = rb_Array(wsave);
    }
    /* if ((TYPE(wsave) != T_ARRAY) && 
           (rb_obj_is_kind_of(wsave, cNArray) != Qtrue)) {
         rb_raise(rb_eTypeError, "invalid type");
       }  -- no check since obj2c*ary will do that */

    i_n = NUM2INT(n);
    io_x = dcl_obj2crealary(x);
    i_wsave = dcl_obj2crealary(wsave);


    sint_(&i_n, io_x, i_wsave);

    {int array_shape[1] = {i_n};
     x = dcl_crealary2obj(io_x, (i_n), 1, array_shape);
    }

    dcl_freecrealary(io_x);
    dcl_freecrealary(i_wsave);

    return x;

}

static VALUE
dcl_sinti(obj, n)
    VALUE obj, n;
{
    integer i_n;
    real *o_wsave;
    VALUE wsave;

    if ((TYPE(n) != T_BIGNUM) || (TYPE(n) != T_FIXNUM)) {
      n = rb_funcall(n, rb_intern("to_i"), 0);
    }

    i_n = NUM2INT(n);

    o_wsave= ALLOCA_N(real, (2*i_n+i_n/2+15));

    sinti_(&i_n, o_wsave);

    {int array_shape[1] = {2*i_n+i_n/2+15};
     wsave = dcl_crealary2obj(o_wsave, (2*i_n+i_n/2+15), 1, array_shape);
    }


    return wsave;

}
void
init_math2_fftlib(mDCL)
VALUE mDCL;
{
    rb_define_module_function(mDCL, "cfftb", dcl_cfftb, 3);
    rb_define_module_function(mDCL, "cfftf", dcl_cfftf, 3);
    rb_define_module_function(mDCL, "cffti", dcl_cffti, 1);
    rb_define_module_function(mDCL, "cosqb", dcl_cosqb, 3);
    rb_define_module_function(mDCL, "cosqf", dcl_cosqf, 3);
    rb_define_module_function(mDCL, "cosqi", dcl_cosqi, 1);
    rb_define_module_function(mDCL, "cost", dcl_cost, 3);
    rb_define_module_function(mDCL, "costi", dcl_costi, 1);
    rb_define_module_function(mDCL, "ezfftb", dcl_ezfftb, 5);
    rb_define_module_function(mDCL, "ezfftf", dcl_ezfftf, 3);
    rb_define_module_function(mDCL, "ezffti", dcl_ezffti, 1);
    rb_define_module_function(mDCL, "rfftb", dcl_rfftb, 3);
    rb_define_module_function(mDCL, "rfftf", dcl_rfftf, 3);
    rb_define_module_function(mDCL, "rffti", dcl_rffti, 1);
    rb_define_module_function(mDCL, "sinqb", dcl_sinqb, 3);
    rb_define_module_function(mDCL, "sinqf", dcl_sinqf, 3);
    rb_define_module_function(mDCL, "sinqi", dcl_sinqi, 1);
    rb_define_module_function(mDCL, "sint", dcl_sint, 3);
    rb_define_module_function(mDCL, "sinti", dcl_sinti, 1);
}