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| author | Artem Pisarenko <artem.k.pisarenko@gmail.com> | 2020-01-02 14:18:47 +0600 |
|---|---|---|
| committer | Martin Braun <martin.braun@ettus.com> | 2020-01-02 11:04:40 -0800 |
| commit | 58ef2ed659776f82d0eb787b2728e0dffd6d8dbe (patch) | |
| tree | e77575ddf04f70f581d9f1e381b25459e05f9ed2 /gnuradio-runtime/lib/math | |
| parent | cddbc0cb41aa87f6ae3699dd632de07efb1682ff (diff) | |
runtime: fix python math script generating wrong sine table
Fixes commit 48d535e9d9d95524b2c8ed35b44c7eda541aea68
Diffstat (limited to 'gnuradio-runtime/lib/math')
| -rw-r--r-- | gnuradio-runtime/lib/math/gen_sine_table.py | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/gnuradio-runtime/lib/math/gen_sine_table.py b/gnuradio-runtime/lib/math/gen_sine_table.py index 5b459fa1a3..d25cffc859 100644 --- a/gnuradio-runtime/lib/math/gen_sine_table.py +++ b/gnuradio-runtime/lib/math/gen_sine_table.py @@ -20,7 +20,6 @@ # Boston, MA 02110-1301, USA. # -from __future__ import division from __future__ import unicode_literals import math import sys @@ -41,7 +40,7 @@ def gen_approx_table (f, nentries, min_x, max_x): a = (i * incx) + min_x b = ((i + 1) * incx) + min_x m = (f(b)-f(a)) / (b-a) - c = (3*a+b)*(f(a)-f(b))/(4*(b-a)) + (f((a+b)/2) + f(a))//2 + c = (3.0*a+b)*(f(a)-f(b))/(4.0*(b-a)) + (f((a+b)/2.0) + f(a))/2.0 abs_error = c+m*a-f(a) r.append ((m, c, abs_error)) return r @@ -71,7 +70,7 @@ def gen_sine_table (): # sys.stdout.write ('static const double sine_table[%d][2] = {\n'% (nentries,)) for e in t: - sys.stdout.write (' { %22.15e, %22.15e },\n' % (2 * e[0], e[1])) + sys.stdout.write (' { %22.15e, %22.15e },\n' % (2.0 * e[0], e[1])) # sys.stdout.write ('};\n') |