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#include "ltfat.h"
#include "ltfat_types.h"
#define CH(name) LTFAT_COMPLEXH(name)
#define PREPROC_REAL \
for (ltfatInt n=0;n<N*W;n+=2) \
{ \
pcoef2[0]=pcoef[0]; \
\
for (ltfatInt m=1;m<M;m+=2) \
{ \
pcoef2[m] = -I*scalconst*(pcoef[m]); \
pcoef2[m+coef2_ld] = scalconst*(pcoef[m+M]); \
} \
\
for (ltfatInt m=2;m<M;m+=2) \
{ \
pcoef2[m] = scalconst*(pcoef[m]); \
pcoef2[m+coef2_ld] = -I*scalconst*(pcoef[m+M]); \
} \
\
pcoef2[M+nyquestadd] = pcoef[M]; \
pcoef+=2*M; \
pcoef2+=2*coef2_ld; \
}
#define PREPROC_COMPLEX \
for (ltfatInt n=0;n<N*W;n+=2) \
{ \
pcoef2[0] = pcoef[0]; \
\
for (ltfatInt m=1;m<M;m+=2) \
{ \
pcoef2[m] = -I*scalconst*pcoef[m]; \
pcoef2[M2-m] = I*scalconst*pcoef[m]; \
pcoef2[M2+m] = scalconst*pcoef[m+M]; \
pcoef2[M4-m] = scalconst*pcoef[m+M]; \
} \
\
for (ltfatInt m=2;m<M;m+=2) \
{ \
pcoef2[m] = scalconst*pcoef[m]; \
pcoef2[M2-m] = scalconst*pcoef[m]; \
pcoef2[M2+m] = -I*scalconst*pcoef[m+M]; \
pcoef2[M4-m] = I*scalconst*pcoef[m+M]; \
} \
\
pcoef2[M+nyquestadd] = pcoef[M]; \
pcoef+=M2; \
pcoef2+=M4; \
}
LTFAT_EXTERN void
LTFAT_NAME_COMPLEX(idwilt_long)(const LTFAT_COMPLEX *c, const LTFAT_COMPLEX *g,
const ltfatInt L, const ltfatInt W, const ltfatInt M,
LTFAT_COMPLEX *f)
{
const ltfatInt N = L / M;
const ltfatInt M2 = 2 * M;
const ltfatInt M4 = 4 * M;
const LTFAT_REAL scalconst = 1.0 / sqrt(2.0);
LTFAT_COMPLEX *coef2 = ltfat_calloc(2 * M * N * W, sizeof * coef2);
const ltfatInt nyquestadd = (M % 2) * M2;
const LTFAT_COMPLEX *pcoef = c;
LTFAT_COMPLEX *pcoef2 = coef2;
PREPROC_COMPLEX
LTFAT_NAME(idgt_long)(coef2, g, L, W, M, 2 * M, FREQINV, f);
ltfat_free(coef2);
}
LTFAT_EXTERN void
LTFAT_NAME_REAL(idwilt_long)(const LTFAT_REAL *c, const LTFAT_REAL *g,
const ltfatInt L, const ltfatInt W, const ltfatInt M,
LTFAT_REAL *f)
{
const ltfatInt N = L / M;
const ltfatInt coef2_ld = M + 1;
const LTFAT_REAL scalconst = 1.0 / sqrt(2.0);
const ltfatInt nyquestadd = (M % 2) * coef2_ld;
LTFAT_COMPLEX *coef2 = ltfat_calloc((M + 1) * N * W, sizeof * coef2);
const LTFAT_REAL *pcoef = c;
LTFAT_COMPLEX *pcoef2 = coef2;
PREPROC_REAL
LTFAT_NAME(idgtreal_long)(coef2, g, L, W, M, 2 * M, FREQINV, f);
ltfat_free(coef2);
}
LTFAT_EXTERN void
LTFAT_NAME_COMPLEX(idwilt_fb)(const LTFAT_COMPLEX *c, const LTFAT_COMPLEX *g,
const ltfatInt L, const ltfatInt gl,
const ltfatInt W, const ltfatInt M,
LTFAT_COMPLEX *f)
{
const ltfatInt N = L / M;
const ltfatInt M2 = 2 * M;
const ltfatInt M4 = 4 * M;
const LTFAT_REAL scalconst = 1.0 / sqrt(2.0);
LTFAT_COMPLEX *coef2 = ltfat_calloc(2 * M * N * W, sizeof * coef2);
const ltfatInt nyquestadd = (M % 2) * M2;
const LTFAT_COMPLEX *pcoef = c;
LTFAT_COMPLEX *pcoef2 = coef2;
PREPROC_COMPLEX
LTFAT_NAME(idgt_fb)(coef2, g, L, gl, W, M, 2 * M, FREQINV, f);
ltfat_free(coef2);
}
LTFAT_EXTERN void
LTFAT_NAME_REAL(idwilt_fb)(const LTFAT_REAL *c, const LTFAT_REAL *g,
const ltfatInt L, const ltfatInt gl,
const ltfatInt W, const ltfatInt M,
LTFAT_REAL *f)
{
const ltfatInt N = L / M;
const ltfatInt coef2_ld = M + 1;
const ltfatInt nyquestadd = (M % 2) * coef2_ld;
const LTFAT_REAL scalconst = (LTFAT_REAL) 1.0 / sqrt(2.0);
LTFAT_COMPLEX *coef2 = ltfat_calloc((M + 1) * N * W, sizeof * coef2);
const LTFAT_REAL* pcoef = c;
LTFAT_COMPLEX* pcoef2 = coef2;
PREPROC_REAL
LTFAT_NAME(idgtreal_fb)(coef2, g, L, gl, W, M, 2 * M, FREQINV, f);
ltfat_free(coef2);
}
#undef CH
#undef PREPROC_REAL
#undef PREPROC_COMPLEX
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