static void move_shadow(struct menu_renderer_image *self)
{
unsigned long int a = (self->linear.time % 2097152) / 4096;
float dx = sinqf(2 * a) * 3 - 2;
float dy = cosqf(a) * 3 + 6;
move_renderer_base(self->tile[1]->parent, dx, dy);
}
/* Main program */ int MAIN__(void)
{
/* Initialized data */
static integer nd[10] = { 120,54,49,32,4,3,2 };
/* Format strings */
static char fmt_1001[] = "(\0020N\002,i5,\002 RFFTF \002,e10.3,\002 RFF"
"TB \002,e10.3,\002 RFFTFB \002,e10.3,\002 SINT \002,e10.3,"
"\002 SINTFB \002,e10.3,\002 COST \002,e10.3/7x,\002 COSTFB "
"\002,e10.3,\002 SINQF \002,e10.3,\002 SINQB \002,e10.3,\002 SI"
"NQFB \002,e10.3,\002 COSQF \002,e10.3,\002 COSQB \002,e10.3/7x,"
"\002 COSQFB \002,e10.3,\002 DEZF \002,e10.3,\002 DEZB \002,e"
"10.3,\002 DEZFB \002,e10.3,\002 CFFTF \002,e10.3,\002 CFFTB "
" \002,e10.3/7x,\002 CFFTFB \002,e10.3)";
/* System generated locals */
integer i__1, i__2, i__3, i__4, i__5, i__6;
doublereal d__1, d__2, d__3, d__4;
doublecomplex z__1, z__2, z__3;
/* Builtin functions */
double sqrt(doublereal), sin(doublereal), cos(doublereal);
integer pow_ii(integer *, integer *);
double atan(doublereal), z_abs(doublecomplex *);
integer s_wsfe(cilist *), do_fio(integer *, char *, ftnlen), e_wsfe(void);
/* Local variables */
doublereal a[100], b[100];
integer i__, j, k, n;
doublereal w[2000], x[200], y[200], ah[100], bh[100], cf, fn, dt, pi;
doublecomplex cx[200], cy[200];
doublereal xh[200];
integer nz, nm1, np1, ns2;
doublereal arg, tfn, tpi;
integer nns;
doublereal sum, arg1, arg2;
integer ns2m;
doublereal sum1, sum2, dcfb;
integer ifac[64], modn;
doublereal rftb, rftf;
extern /* Subroutine */ void cost(integer *, doublereal *, doublereal *,
integer *), sint(integer *, doublereal *, doublereal *, integer *
);
doublereal dezb1, dezf1, sqrt2;
extern /* Subroutine */ void cfftb(integer *, doublecomplex *, doublereal
*, integer *), cfftf(integer *, doublecomplex *, doublereal *,
integer *);
doublereal dezfb;
extern /* Subroutine */ void cffti(integer *, doublereal *, integer *),
rfftb(integer *, doublereal *, doublereal *, integer *);
doublereal rftfb;
extern /* Subroutine */ void rfftf(integer *, doublereal *, doublereal *,
integer *), cosqb(integer *, doublereal *, doublereal *, integer
*), rffti(integer *, doublereal *, integer *), cosqf(integer *,
doublereal *, doublereal *, integer *), sinqb(integer *,
doublereal *, doublereal *, integer *), cosqi(integer *,
doublereal *, integer *), sinqf(integer *, doublereal *,
doublereal *, integer *), costi(integer *, doublereal *, integer
*);
doublereal azero;
extern /* Subroutine */ void sinqi(integer *, doublereal *, integer *),
sinti(integer *, doublereal *, integer *);
doublereal costt, sintt, dcfftb, dcfftf, cosqfb, costfb;
extern /* Subroutine */ void ezfftb(integer *, doublereal *, doublereal *,
doublereal *, doublereal *, doublereal *, integer *);
doublereal sinqfb;
extern /* Subroutine */ void ezfftf(integer *, doublereal *, doublereal *,
doublereal *, doublereal *, doublereal *, integer *);
doublereal sintfb;
extern /* Subroutine */ void ezffti(integer *, doublereal *, integer *);
doublereal azeroh, cosqbt, cosqft, sinqbt, sinqft;
/* Fortran I/O blocks */
static cilist io___58 = { 0, 6, 0, fmt_1001, 0 };
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* VERSION 4 APRIL 1985 */
/* A TEST DRIVER FOR */
/* A PACKAGE OF FORTRAN SUBPROGRAMS FOR THE FAST FOURIER */
/* TRANSFORM OF PERIODIC AND OTHER SYMMETRIC SEQUENCES */
/* BY */
/* PAUL N SWARZTRAUBER */
/* NATIONAL CENTER FOR ATMOSPHERIC RESEARCH BOULDER,COLORADO 80307 */
/* WHICH IS SPONSORED BY THE NATIONAL SCIENCE FOUNDATION */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* THIS PROGRAM TESTS THE PACKAGE OF FAST FOURIER */
/* TRANSFORMS FOR BOTH COMPLEX AND REAL PERIODIC SEQUENCES AND */
/* CERTIAN OTHER SYMMETRIC SEQUENCES THAT ARE LISTED BELOW. */
/* 1. RFFTI INITIALIZE RFFTF AND RFFTB */
/* 2. RFFTF FORWARD TRANSFORM OF A REAL PERIODIC SEQUENCE */
/* 3. RFFTB BACKWARD TRANSFORM OF A REAL COEFFICIENT ARRAY */
/* 4. EZFFTI INITIALIZE EZFFTF AND EZFFTB */
/* 5. EZFFTF A SIMPLIFIED REAL PERIODIC FORWARD TRANSFORM */
/* 6. EZFFTB A SIMPLIFIED REAL PERIODIC BACKWARD TRANSFORM */
/* 7. SINTI INITIALIZE SINT */
/* 8. SINT SINE TRANSFORM OF A REAL ODD SEQUENCE */
/* 9. COSTI INITIALIZE COST */
/* 10. COST COSINE TRANSFORM OF A REAL EVEN SEQUENCE */
/* 11. SINQI INITIALIZE SINQF AND SINQB */
/* 12. SINQF FORWARD SINE TRANSFORM WITH ODD WAVE NUMBERS */
/* 13. SINQB UNNORMALIZED INVERSE OF SINQF */
/* 14. COSQI INITIALIZE COSQF AND COSQB */
/* 15. COSQF FORWARD COSINE TRANSFORM WITH ODD WAVE NUMBERS */
/* 16. COSQB UNNORMALIZED INVERSE OF COSQF */
/* 17. CFFTI INITIALIZE CFFTF AND CFFTB */
/* 18. CFFTF FORWARD TRANSFORM OF A COMPLEX PERIODIC SEQUENCE */
/* 19. CFFTB UNNORMALIZED INVERSE OF CFFTF */
sqrt2 = sqrt(2.0);
nns = 7;
i__1 = nns;
for (nz = 1; nz <= i__1; ++nz) {
n = nd[nz - 1];
modn = n % 2;
fn = (real) n;
tfn = fn + fn;
np1 = n + 1;
nm1 = n - 1;
i__2 = np1;
for (j = 1; j <= i__2; ++j) {
x[j - 1] = sin((real) j * sqrt2);
y[j - 1] = x[j - 1];
xh[j - 1] = x[j - 1];
/* L101: */
}
/* TEST SUBROUTINES RFFTI,RFFTF AND RFFTB */
rffti(&n, w, ifac);
pi = 3.141592653589793238462643383279502884197169399375108209749445923;
dt = (pi + pi) / fn;
ns2 = (n + 1) / 2;
if (ns2 < 2) {
goto L104;
}
i__2 = ns2;
for (k = 2; k <= i__2; ++k) {
sum1 = 0.0;
sum2 = 0.0;
arg = (real) (k - 1) * dt;
i__3 = n;
for (i__ = 1; i__ <= i__3; ++i__) {
arg1 = (real) (i__ - 1) * arg;
sum1 += x[i__ - 1] * cos(arg1);
sum2 += x[i__ - 1] * sin(arg1);
/* L102: */
}
y[(k << 1) - 3] = sum1;
y[(k << 1) - 2] = -sum2;
/* L103: */
}
L104:
sum1 = 0.0;
sum2 = 0.0;
i__2 = nm1;
for (i__ = 1; i__ <= i__2; i__ += 2) {
sum1 += x[i__ - 1];
sum2 += x[i__];
/* L105: */
}
if (modn == 1) {
sum1 += x[n - 1];
}
y[0] = sum1 + sum2;
if (modn == 0) {
y[n - 1] = sum1 - sum2;
}
rfftf(&n, x, w, ifac);
rftf = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = rftf, d__3 = (d__1 = x[i__ - 1] - y[i__ - 1], abs(d__1));
rftf = max(d__2,d__3);
x[i__ - 1] = xh[i__ - 1];
/* L106: */
}
rftf /= fn;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
sum = x[0] * 0.5;
arg = (real) (i__ - 1) * dt;
if (ns2 < 2) {
goto L108;
}
i__3 = ns2;
for (k = 2; k <= i__3; ++k) {
arg1 = (real) (k - 1) * arg;
sum = sum + x[(k << 1) - 3] * cos(arg1) - x[(k << 1) - 2] *
sin(arg1);
/* L107: */
}
L108:
if (modn == 0) {
i__3 = i__ - 1;
sum += (real) pow_ii(&c_n1, &i__3) * 0.5 * x[n - 1];
}
y[i__ - 1] = sum + sum;
/* L109: */
}
rfftb(&n, x, w, ifac);
rftb = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = rftb, d__3 = (d__1 = x[i__ - 1] - y[i__ - 1], abs(d__1));
rftb = max(d__2,d__3);
x[i__ - 1] = xh[i__ - 1];
y[i__ - 1] = xh[i__ - 1];
/* L110: */
}
rfftb(&n, y, w, ifac);
rfftf(&n, y, w, ifac);
cf = 1.0 / fn;
rftfb = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = rftfb, d__3 = (d__1 = cf * y[i__ - 1] - x[i__ - 1], abs(
d__1));
rftfb = max(d__2,d__3);
/* L111: */
}
/* TEST SUBROUTINES SINTI AND SINT */
dt = pi / fn;
i__2 = nm1;
for (i__ = 1; i__ <= i__2; ++i__) {
x[i__ - 1] = xh[i__ - 1];
/* L112: */
}
i__2 = nm1;
for (i__ = 1; i__ <= i__2; ++i__) {
y[i__ - 1] = 0.0;
arg1 = (real) i__ * dt;
i__3 = nm1;
for (k = 1; k <= i__3; ++k) {
y[i__ - 1] += x[k - 1] * sin((real) k * arg1);
/* L113: */
}
y[i__ - 1] += y[i__ - 1];
/* L114: */
}
sinti(&nm1, w, ifac);
sint(&nm1, x, w, ifac);
cf = 0.5 / fn;
sintt = 0.0;
i__2 = nm1;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = sintt, d__3 = (d__1 = x[i__ - 1] - y[i__ - 1], abs(d__1));
sintt = max(d__2,d__3);
x[i__ - 1] = xh[i__ - 1];
y[i__ - 1] = x[i__ - 1];
/* L115: */
}
sintt = cf * sintt;
sint(&nm1, x, w, ifac);
sint(&nm1, x, w, ifac);
sintfb = 0.0;
i__2 = nm1;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = sintfb, d__3 = (d__1 = cf * x[i__ - 1] - y[i__ - 1], abs(
d__1));
sintfb = max(d__2,d__3);
/* L116: */
}
/* TEST SUBROUTINES COSTI AND COST */
i__2 = np1;
for (i__ = 1; i__ <= i__2; ++i__) {
x[i__ - 1] = xh[i__ - 1];
/* L117: */
}
i__2 = np1;
for (i__ = 1; i__ <= i__2; ++i__) {
i__3 = i__ + 1;
y[i__ - 1] = (x[0] + (real) pow_ii(&c_n1, &i__3) * x[n]) * 0.5;
arg = (real) (i__ - 1) * dt;
i__3 = n;
for (k = 2; k <= i__3; ++k) {
y[i__ - 1] += x[k - 1] * cos((real) (k - 1) * arg);
/* L118: */
}
y[i__ - 1] += y[i__ - 1];
/* L119: */
}
costi(&np1, w, ifac);
cost(&np1, x, w, ifac);
costt = 0.0;
i__2 = np1;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = costt, d__3 = (d__1 = x[i__ - 1] - y[i__ - 1], abs(d__1));
costt = max(d__2,d__3);
x[i__ - 1] = xh[i__ - 1];
y[i__ - 1] = xh[i__ - 1];
/* L120: */
}
costt = cf * costt;
cost(&np1, x, w, ifac);
cost(&np1, x, w, ifac);
costfb = 0.0;
i__2 = np1;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = costfb, d__3 = (d__1 = cf * x[i__ - 1] - y[i__ - 1], abs(
d__1));
costfb = max(d__2,d__3);
/* L121: */
}
/* TEST SUBROUTINES SINQI,SINQF AND SINQB */
cf = 0.25 / fn;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
y[i__ - 1] = xh[i__ - 1];
/* L122: */
}
dt = pi / (fn + fn);
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
x[i__ - 1] = 0.0;
arg = dt * (real) i__;
i__3 = n;
for (k = 1; k <= i__3; ++k) {
x[i__ - 1] += y[k - 1] * sin((real) (k + k - 1) * arg);
/* L123: */
}
x[i__ - 1] *= 4.0;
/* L124: */
}
sinqi(&n, w, ifac);
sinqb(&n, y, w, ifac);
sinqbt = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = sinqbt, d__3 = (d__1 = y[i__ - 1] - x[i__ - 1], abs(d__1));
sinqbt = max(d__2,d__3);
x[i__ - 1] = xh[i__ - 1];
/* L125: */
}
sinqbt = cf * sinqbt;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
arg = (real) (i__ + i__ - 1) * dt;
i__3 = i__ + 1;
y[i__ - 1] = (real) pow_ii(&c_n1, &i__3) * 0.5 * x[n - 1];
i__3 = nm1;
for (k = 1; k <= i__3; ++k) {
y[i__ - 1] += x[k - 1] * sin((real) k * arg);
/* L126: */
}
y[i__ - 1] += y[i__ - 1];
/* L127: */
}
sinqf(&n, x, w, ifac);
sinqft = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = sinqft, d__3 = (d__1 = x[i__ - 1] - y[i__ - 1], abs(d__1));
sinqft = max(d__2,d__3);
y[i__ - 1] = xh[i__ - 1];
x[i__ - 1] = xh[i__ - 1];
/* L128: */
}
sinqf(&n, y, w, ifac);
sinqb(&n, y, w, ifac);
sinqfb = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = sinqfb, d__3 = (d__1 = cf * y[i__ - 1] - x[i__ - 1], abs(
d__1));
sinqfb = max(d__2,d__3);
/* L129: */
}
/* TEST SUBROUTINES COSQI,COSQF AND COSQB */
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
y[i__ - 1] = xh[i__ - 1];
/* L130: */
}
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
x[i__ - 1] = 0.0;
arg = (real) (i__ - 1) * dt;
i__3 = n;
for (k = 1; k <= i__3; ++k) {
x[i__ - 1] += y[k - 1] * cos((real) (k + k - 1) * arg);
/* L131: */
}
x[i__ - 1] *= 4.0;
/* L132: */
}
cosqi(&n, w, ifac);
cosqb(&n, y, w, ifac);
cosqbt = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = cosqbt, d__3 = (d__1 = x[i__ - 1] - y[i__ - 1], abs(d__1));
cosqbt = max(d__2,d__3);
x[i__ - 1] = xh[i__ - 1];
/* L133: */
}
cosqbt = cf * cosqbt;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
y[i__ - 1] = x[0] * 0.5;
arg = (real) (i__ + i__ - 1) * dt;
i__3 = n;
for (k = 2; k <= i__3; ++k) {
y[i__ - 1] += x[k - 1] * cos((real) (k - 1) * arg);
/* L134: */
}
y[i__ - 1] += y[i__ - 1];
/* L135: */
}
cosqf(&n, x, w, ifac);
cosqft = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = cosqft, d__3 = (d__1 = y[i__ - 1] - x[i__ - 1], abs(d__1));
cosqft = max(d__2,d__3);
x[i__ - 1] = xh[i__ - 1];
y[i__ - 1] = xh[i__ - 1];
/* L136: */
}
cosqft = cf * cosqft;
cosqb(&n, x, w, ifac);
cosqf(&n, x, w, ifac);
cosqfb = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = cosqfb, d__3 = (d__1 = cf * x[i__ - 1] - y[i__ - 1], abs(
d__1));
cosqfb = max(d__2,d__3);
/* L137: */
}
/* TEST PROGRAMS EZFFTI,EZFFTF,EZFFTB */
ezffti(&n, w, ifac);
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
x[i__ - 1] = xh[i__ - 1];
/* L138: */
}
tpi = atan(1.0) * 8.0;
dt = tpi / (real) n;
ns2 = (n + 1) / 2;
cf = 2.0 / (real) n;
ns2m = ns2 - 1;
if (ns2m <= 0) {
goto L141;
}
i__2 = ns2m;
for (k = 1; k <= i__2; ++k) {
sum1 = 0.0;
sum2 = 0.0;
arg = (real) k * dt;
i__3 = n;
for (i__ = 1; i__ <= i__3; ++i__) {
arg1 = (real) (i__ - 1) * arg;
sum1 += x[i__ - 1] * cos(arg1);
sum2 += x[i__ - 1] * sin(arg1);
/* L139: */
}
a[k - 1] = cf * sum1;
b[k - 1] = cf * sum2;
/* L140: */
}
L141:
nm1 = n - 1;
sum1 = 0.0;
sum2 = 0.0;
i__2 = nm1;
for (i__ = 1; i__ <= i__2; i__ += 2) {
sum1 += x[i__ - 1];
sum2 += x[i__];
/* L142: */
}
if (modn == 1) {
sum1 += x[n - 1];
}
azero = cf * 0.5 * (sum1 + sum2);
if (modn == 0) {
a[ns2 - 1] = cf * 0.5 * (sum1 - sum2);
}
ezfftf(&n, x, &azeroh, ah, bh, w, ifac);
dezf1 = (d__1 = azeroh - azero, abs(d__1));
if (modn == 0) {
/* Computing MAX */
d__2 = dezf1, d__3 = (d__1 = a[ns2 - 1] - ah[ns2 - 1], abs(d__1));
dezf1 = max(d__2,d__3);
}
if (ns2m <= 0) {
goto L144;
}
i__2 = ns2m;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__3 = dezf1, d__4 = (d__1 = ah[i__ - 1] - a[i__ - 1], abs(d__1)),
d__3 = max(d__3,d__4), d__4 = (d__2 = bh[i__ - 1] - b[
i__ - 1], abs(d__2));
dezf1 = max(d__3,d__4);
/* L143: */
}
L144:
ns2 = n / 2;
if (modn == 0) {
b[ns2 - 1] = 0.0;
}
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
sum = azero;
arg1 = (real) (i__ - 1) * dt;
i__3 = ns2;
for (k = 1; k <= i__3; ++k) {
arg2 = (real) k * arg1;
sum = sum + a[k - 1] * cos(arg2) + b[k - 1] * sin(arg2);
/* L145: */
}
x[i__ - 1] = sum;
/* L146: */
}
ezfftb(&n, y, &azero, a, b, w, ifac);
dezb1 = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = dezb1, d__3 = (d__1 = x[i__ - 1] - y[i__ - 1], abs(d__1));
dezb1 = max(d__2,d__3);
x[i__ - 1] = xh[i__ - 1];
/* L147: */
}
ezfftf(&n, x, &azero, a, b, w, ifac);
ezfftb(&n, y, &azero, a, b, w, ifac);
dezfb = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
d__2 = dezfb, d__3 = (d__1 = x[i__ - 1] - y[i__ - 1], abs(d__1));
dezfb = max(d__2,d__3);
/* L148: */
}
/* TEST CFFTI,CFFTF,CFFTB */
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
i__3 = i__ - 1;
d__1 = cos(sqrt2 * (real) i__);
d__2 = sin(sqrt2 * (real) (i__ * i__));
z__1.r = d__1, z__1.i = d__2;
cx[i__3].r = z__1.r, cx[i__3].i = z__1.i;
/* L149: */
}
dt = (pi + pi) / fn;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
arg1 = -((real) (i__ - 1)) * dt;
i__3 = i__ - 1;
cy[i__3].r = 0.0, cy[i__3].i = 0.0;
i__3 = n;
for (k = 1; k <= i__3; ++k) {
arg2 = (real) (k - 1) * arg1;
i__4 = i__ - 1;
i__5 = i__ - 1;
d__1 = cos(arg2);
d__2 = sin(arg2);
z__3.r = d__1, z__3.i = d__2;
i__6 = k - 1;
z__2.r = z__3.r * cx[i__6].r - z__3.i * cx[i__6].i, z__2.i =
z__3.r * cx[i__6].i + z__3.i * cx[i__6].r;
z__1.r = cy[i__5].r + z__2.r, z__1.i = cy[i__5].i + z__2.i;
cy[i__4].r = z__1.r, cy[i__4].i = z__1.i;
/* L150: */
}
/* L151: */
}
cffti(&n, w, ifac);
cfftf(&n, cx, w, ifac);
dcfftf = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
i__3 = i__ - 1;
i__4 = i__ - 1;
z__1.r = cx[i__3].r - cy[i__4].r, z__1.i = cx[i__3].i - cy[i__4]
.i;
d__1 = dcfftf, d__2 = z_abs(&z__1);
dcfftf = max(d__1,d__2);
i__3 = i__ - 1;
i__4 = i__ - 1;
z__1.r = cx[i__4].r / fn, z__1.i = cx[i__4].i / fn;
cx[i__3].r = z__1.r, cx[i__3].i = z__1.i;
/* L152: */
}
dcfftf /= fn;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
arg1 = (real) (i__ - 1) * dt;
i__3 = i__ - 1;
cy[i__3].r = 0.0, cy[i__3].i = 0.0;
i__3 = n;
for (k = 1; k <= i__3; ++k) {
arg2 = (real) (k - 1) * arg1;
i__4 = i__ - 1;
i__5 = i__ - 1;
d__1 = cos(arg2);
d__2 = sin(arg2);
z__3.r = d__1, z__3.i = d__2;
i__6 = k - 1;
z__2.r = z__3.r * cx[i__6].r - z__3.i * cx[i__6].i, z__2.i =
z__3.r * cx[i__6].i + z__3.i * cx[i__6].r;
z__1.r = cy[i__5].r + z__2.r, z__1.i = cy[i__5].i + z__2.i;
cy[i__4].r = z__1.r, cy[i__4].i = z__1.i;
/* L153: */
}
/* L154: */
}
cfftb(&n, cx, w, ifac);
dcfftb = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
i__3 = i__ - 1;
i__4 = i__ - 1;
z__1.r = cx[i__3].r - cy[i__4].r, z__1.i = cx[i__3].i - cy[i__4]
.i;
d__1 = dcfftb, d__2 = z_abs(&z__1);
dcfftb = max(d__1,d__2);
i__3 = i__ - 1;
i__4 = i__ - 1;
cx[i__3].r = cy[i__4].r, cx[i__3].i = cy[i__4].i;
/* L155: */
}
cf = 1.0 / fn;
cfftf(&n, cx, w, ifac);
cfftb(&n, cx, w, ifac);
dcfb = 0.0;
i__2 = n;
for (i__ = 1; i__ <= i__2; ++i__) {
/* Computing MAX */
i__3 = i__ - 1;
z__2.r = cf * cx[i__3].r, z__2.i = cf * cx[i__3].i;
i__4 = i__ - 1;
z__1.r = z__2.r - cy[i__4].r, z__1.i = z__2.i - cy[i__4].i;
d__1 = dcfb, d__2 = z_abs(&z__1);
dcfb = max(d__1,d__2);
/* L156: */
}
s_wsfe(&io___58);
do_fio(&c__1, (char *)&n, (ftnlen)sizeof(integer));
do_fio(&c__1, (char *)&rftf, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&rftb, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&rftfb, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&sintt, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&sintfb, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&costt, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&costfb, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&sinqft, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&sinqbt, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&sinqfb, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&cosqft, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&cosqbt, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&cosqfb, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&dezf1, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&dezb1, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&dezfb, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&dcfftf, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&dcfftb, (ftnlen)sizeof(doublereal));
do_fio(&c__1, (char *)&dcfb, (ftnlen)sizeof(doublereal));
e_wsfe();
/* L157: */
}
return 0;
} /* MAIN__ */
static inline float sinqf(unsigned long int a) { return cosqf(a + 64); }