42# define SAMPPROD int64_t
43#define SAMP_MAX INT32_MAX
44#define SAMP_MIN INT32_MIN
47# define SAMPPROD int32_t
48#define SAMP_MAX INT16_MAX
49#define SAMP_MIN INT16_MIN
52#if defined(CHECK_OVERFLOW)
53# define CHECK_OVERFLOW_OP(a,op,b) \
54 if ( (SAMPPROD)(a) op (SAMPPROD)(b) > SAMP_MAX || (SAMPPROD)(a) op (SAMPPROD)(b) < SAMP_MIN ) { \
55 fprintf(stderr,"WARNING:overflow @ " __FILE__ "(%d): (%d " #op" %d) = %ld\n",__LINE__,(a),(b),(SAMPPROD)(a) op (SAMPPROD)(b) ); }
59# define smul(a,b) ( (SAMPPROD)(a)*(b) )
60# define sround( x ) (kiss_fft_scalar)( ( (x) + (1<<(FRACBITS-1)) ) >> FRACBITS )
62# define S_MUL(a,b) sround( smul(a,b) )
64# define C_MUL(m,a,b) \
65 do{ (m).r = sround( smul((a).r,(b).r) - smul((a).i,(b).i) ); \
66 (m).i = sround( smul((a).r,(b).i) + smul((a).i,(b).r) ); }while(0)
68# define DIVSCALAR(x,k) \
69 (x) = sround( smul( x, SAMP_MAX/k ) )
71# define C_FIXDIV(c,div) \
72 do { DIVSCALAR( (c).r , div); \
73 DIVSCALAR( (c).i , div); }while (0)
75# define C_MULBYSCALAR( c, s ) \
76 do{ (c).r = sround( smul( (c).r , s ) ) ;\
77 (c).i = sround( smul( (c).i , s ) ) ; }while(0)
81# define S_MUL(a,b) ( (a)*(b) )
83 do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
84 (m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
85# define C_FIXDIV(c,div)
86# define C_MULBYSCALAR( c, s ) \
88 (c).i *= (s); }while(0)
91#ifndef CHECK_OVERFLOW_OP
92# define CHECK_OVERFLOW_OP(a,op,b)
95#define C_ADD( res, a,b)\
97 CHECK_OVERFLOW_OP((a).r,+,(b).r)\
98 CHECK_OVERFLOW_OP((a).i,+,(b).i)\
99 (res).r=(a).r+(b).r; (res).i=(a).i+(b).i; \
101#define C_SUB( res, a,b)\
103 CHECK_OVERFLOW_OP((a).r,-,(b).r)\
104 CHECK_OVERFLOW_OP((a).i,-,(b).i)\
105 (res).r=(a).r-(b).r; (res).i=(a).i-(b).i; \
107#define C_ADDTO( res , a)\
109 CHECK_OVERFLOW_OP((res).r,+,(a).r)\
110 CHECK_OVERFLOW_OP((res).i,+,(a).i)\
111 (res).r += (a).r; (res).i += (a).i;\
114#define C_SUBFROM( res , a)\
116 CHECK_OVERFLOW_OP((res).r,-,(a).r)\
117 CHECK_OVERFLOW_OP((res).i,-,(a).i)\
118 (res).r -= (a).r; (res).i -= (a).i; \
123# define KISS_FFT_COS(phase) floor(.5+SAMP_MAX * cos (phase))
124# define KISS_FFT_SIN(phase) floor(.5+SAMP_MAX * sin (phase))
125# define HALF_OF(x) ((x)>>1)
126#elif defined(USE_SIMD)
127# define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) )
128# define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) )
129# define HALF_OF(x) ((x)*_mm_set1_ps(.5))
131# define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
132# define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
133# define HALF_OF(x) ((x)*.5)
136#define kf_cexp(x,phase) \
138 (x)->r = KISS_FFT_COS(phase);\
139 (x)->i = KISS_FFT_SIN(phase);\
145 fprintf(stderr,"%g + %gi\n",(double)((c)->r),(double)((c)->i) )
148#ifdef KISS_FFT_USE_ALLOCA
154#define KISS_FFT_TMP_ALLOC(nbytes) alloca(nbytes)
155#define KISS_FFT_TMP_FREE(ptr)
157#define KISS_FFT_TMP_ALLOC(nbytes) KISS_FFT_MALLOC(nbytes)
158#define KISS_FFT_TMP_FREE(ptr) KISS_FFT_FREE(ptr)
#define MAXFACTORS
Definition _kiss_fft_guts.h:16
Definition _kiss_fft_guts.h:22
int factors[2 *MAXFACTORS]
Definition _kiss_fft_guts.h:25
int inverse
Definition _kiss_fft_guts.h:24
int nfft
Definition _kiss_fft_guts.h:23
kiss_fft_cpx twiddles[1]
Definition _kiss_fft_guts.h:26