CORDIC: Difference between revisions
Added Sidef
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2: "6 constants in memory."
1: { -.91113026188 1 7.07372016661E-2 .960170286655 }
</pre>
=={{header|Sidef}}==
{{trans|Perl}}
<syntaxhighlight lang="ruby">func CORDIC(a) {
var (k, x, y) = (0, 1, 0)
var PoT = %n(1, 0.1, 0.01, 0.001, 0.0001, 0.00001)
var Tbl = %n(7.853981633e-1 9.966865249e-2 9.999666686e-3 9.999996666e-4 9.999999966e-5 9.999999999e-6 0)
for (true; a > 1e-5; a -= Tbl[k]) {
while (a < Tbl[k]) { ++k }
(x,y) = (x - PoT[k]*y, y + PoT[k]*x)
}
x / hypot(x,y)
}
print("Angle CORDIC Cosine Error\n")
for angle in (%n(-9 0 1.5 6)) {
var cordic = CORDIC(angle.abs)
printf("%4.1f %12.8f %12.8f %12.8f\n", angle, cordic, cos(angle), cos(angle) - cordic)
}</syntaxhighlight>
{{out}}
<pre>
Angle CORDIC Cosine Error
-9.0 -0.91112769 -0.91113026 -0.00000257
0.0 1.00000000 1.00000000 0.00000000
1.5 0.07073880 0.07073720 -0.00000160
6.0 0.96016761 0.96017029 0.00000268
</pre>
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