1c0bc1d5c9
make fft scaling independent from rounding behaviour for odd data
2026-03-06 16:34:20 +01:00
32e0d5f12f
Revert "make fft scaling independent from rounding behaviour for odd data"
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This reverts commit a31ac54200
2026-03-06 16:31:29 +01:00
a31ac54200
make fft scaling independent from rounding behaviour for odd data
2026-03-05 09:30:55 +01:00
b522bcc6c0
correct Nyquist bin scaling for Green branch
2026-03-03 20:39:08 +01:00
ad44b4ff4c
let nyquist bin not empty for odd vector
2026-03-03 18:32:32 +01:00
a0dc0bb608
Special Nyquist scaling only for even length
2026-03-03 09:55:57 +01:00
6ae057b3ea
revert commit 5e82b63
2026-03-03 08:54:03 +01:00
d2b1ecbb23
correct fft scaling at Nyquist freq. in fft cmd and vector operation
2026-03-01 16:18:24 +01:00
5e82b63f62
adapt FFT point number for real input vectors in fft cmd and vector operation wrt. bug #829
2026-03-01 16:14:04 +01:00
26c86841df
Remove compiler warnings
2026-02-03 15:20:05 +01:00
14363ba45a
Moving window filtering with function 'newvec = mtimeavg(vec)'
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Window of fixed time width given by 'set mtimeavgwindow=400u'
Length and scale of newvec resembles the original vetor vec.
Large vec and large mtimeavgwindow take their time.
OpenMP is used if available.
2026-01-20 15:24:52 +01:00
66dfc915e9
Add a function m3avg(vector) for filtering of trap ringing.
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Moving average with D(n) = (C(n-1)/2 + C(n) + C(n+1)/2)/2
2025-12-28 23:19:58 +01:00
adaa3d39fc
no use for grouping in cx_fft and cx_ifft
2024-02-16 13:56:43 +01:00
2cf2693706
few code cleanings
2023-11-12 17:04:36 +01:00
794a37339a
ifft: in case input array is smaller then output array - fill in the rest with zero to prevent uninitialzed plot variables
2023-07-15 11:32:11 +02:00
42b803e5c2
same array size for in- and output in inverse fft function from fftw3
2023-07-15 11:31:59 +02:00
0ee5e3f32a
Add a control language function cvector, to create a complex vector.
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Let vec1 = cvector(50)
will generate a complex vector, with the real part values
increasing from 0 to 49, the imaginary values are set to 0.
Useful in ac loops to store result data.
2023-07-15 11:17:10 +02:00
3632a6b4ae
We need to translate from degree to rad
2023-03-18 22:32:25 +01:00
2a6052517b
Fix prvious commit: allow access to all vector elements of cc
2023-03-18 22:32:19 +01:00
68156fa62c
Complex number handling other than MSVC
2023-03-18 22:32:07 +01:00
71571a1432
Add function atanh to .control section
2023-03-18 22:31:48 +01:00
45e6d319f3
partly revert last commit: only real input vector get special scaling for dc component
2023-03-18 14:31:31 +01:00
bccaee4821
correct fft dc scaling bug #620
2023-03-18 14:31:24 +01:00
02789b2c42
The modulo function a % n should accept a==0.
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The fix adds this to the control section function parser. The numparam
parser already has this feature. n==0 is rejected as usual.
2023-01-15 13:37:57 +01:00
638a09b718
Make doxygen documentation complete as an example.
2022-10-22 19:51:32 +02:00
70f38ec25f
Update for doxygen: add function names to \brief
2022-10-22 19:51:06 +02:00
b6d2a50e42
Update to comments for doxygen
2022-10-22 19:50:40 +02:00
3288d5ac99
Test for doxygen documentation
2022-10-22 19:48:12 +02:00
d7485d7136
Fix typo
2022-10-14 13:51:16 +02:00
d46b4030fb
Avoid jump in phase when crossing 90° boundaries.
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Code similar to cx_cph in cmath1.c
2022-10-07 13:00:02 +02:00
26c50de68b
function deriv: This is just a preliminary fix: prevent a crash
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when base > 0.
But when is base supposed to be > 0 ? More invetigation is needed.
2022-04-25 21:34:41 +02:00
1605d293d0
Add function integ to control language
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Trapezoidal rule for integrating a vector.
2021-12-13 21:49:45 +01:00
2c2e21a80c
Smal typo fixup s/currntly/currently
2021-08-08 11:56:30 +02:00
4dbd8b7f9a
Preliminary fix for the 'interpolate' function.
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Interpolation of 1D vectors is o.k. now,
multi-dimensional vectors are not (yet) supported.
2021-07-22 20:37:57 +02:00
1698004078
The tests of cmaths function will be done only on request,
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with configure flag --enable-cmathtests
2020-10-10 12:09:52 +02:00
b518d90509
EXITPOINT to delete malloced var in case of check failure
2020-04-27 10:16:37 +02:00
3a6a445241
rcheck -> rcheckn in cmath1.c
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delete alloced memory in case of check failure
2020-04-04 14:11:32 +02:00
ba81e21197
rcheckn: rcheck plus freeing allocated memory
2020-04-04 14:11:07 +02:00
de4788cfe5
Added conjugate function conj().
2020-03-15 08:50:55 +01:00
ea81da2b01
[PATCH #55-1] Fixed some compiler warnings added by Visual Studio 2019
2019-08-13 23:29:13 +02:00
76c43ab512
using the native tan and tanh math functions for real vector calculation
2018-10-13 18:18:47 +02:00
2786fcb86e
New .option seed=[val|random]
2018-07-22 15:11:44 +02:00
09c876550f
prevent string overflow by adding the string length
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to the cp_getvar parameters. Used only with CP_STRING
2018-07-22 14:57:49 +02:00
a98d01e5f8
Use only internal memory functions, replace
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free->tfree, malloc->tmalloc, realloc->trealloc
2018-07-21 23:54:43 +02:00
b8a9ca9df4
correct the fft scaling for real input and complex output vector
2017-08-16 21:35:41 +02:00
3a9ace82bb
winmain.c, etc, cleanup, rewrite obfuscated symbols
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substitute in the whole source code:
"__stream" --> "stream"
"__pos" --> "pos"
"__s" --> "s"
"__n" --> "n"
"__c" --> "c"
"__format" --> "format"
"__ptr" --> "ptr"
"__size" --> "size"
"__path" --> "path"
"__mode" --> "mode"
"__offset" --> "offset"
"__whence" --> "whence"
"__arglist" --> "arglist"
"__buf" --> "buf"
"__fp" --> "fp"
"f_c_l_o_s_e" --> "win_x_fclose"
"f_e_o_f" --> "win_x_feof"
"f_e_r_r_o_r" --> "win_x_ferror"
"f_f_l_u_s_h" --> "win_x_fflush"
"fg_e_t_c" --> "win_x_fgetc"
"f_g_e_t_p_o_s" --> "win_x_fgetpos"
"fg_e_t_s" --> "win_x_fgets"
"fp_r_i_n_t_f" --> "win_x_fprintf"
"fp_u_t_c" --> "win_x_fputc"
"fp_u_t_char" --> "win_x_fputchar"
"fp_u_t_s" --> "win_x_fputs"
"f_r_e_a_d" --> "win_x_fread"
"f_r_e_o_p_e_n" --> "win_x_freopen"
"fs_c_a_n_f" --> "win_x_fscanf"
"f_s_e_e_k" --> "win_x_fseek"
"f_s_e_t_p_o_s" --> "win_x_fsetpos"
"f_t_e_l_l" --> "win_x_ftell"
"f_w_r_i_t_e" --> "win_x_fwrite"
"g_e_t_c" --> "win_x_getc"
"g_e_t_char" --> "win_x_getchar"
"g_e_t_s" --> "win_x_gets"
"p_e_r_r_o_r" --> "win_x_perror"
"p_r_i_n_t_f" --> "win_x_printf"
"p_u_t_c" --> "win_x_putc"
"p_u_t_char" --> "win_x_putchar"
"p_u_t_s" --> "win_x_puts"
"r_e_a_d" --> "win_x_read"
"s_c_a_n_f" --> "win_x_scanf"
"ung_e_t_c" --> "win_x_ungetc"
"vfp_r_i_n_t_f" --> "win_x_vfprintf"
"vfs_c_a_n_f" --> "win_x_vfscanf"
"vp_r_i_n_t_f" --> "win_x_vprintf"
"vs_c_a_n_f" --> "win_x_vscanf"
2017-02-10 19:50:42 +01:00
ea5ad6b0e7
drop DC_ABS() and FTEcabs()
2016-10-15 15:06:18 +02:00
ae80067fef
cmath2.c, new function stddev to calculate the standard deviation of all elements of a vector
2016-10-15 15:06:17 +02:00
594db31ebc
cmath2.c, whitespace cleanup
2016-10-15 15:06:17 +02:00
b8b6677b85
cmath2.c, drop some excess NG_IGNORE()
2016-10-15 15:06:17 +02:00
geraldfournier
Holger Vogt
dwarning
dwarning
Carsten Schoenert
Jim Monte
Jim Monte
rlar
h_vogt