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D.12.2.13 wUnit
Procedure from library
atkins.lib
(see
atkins_lib
).
Usage:
wUnit(D);
Return:
the number of roots of unity in the quadratic order of discriminant D
Assume:
D<0 a discriminant kongruent to 0 or 1 modulo 4
Example:
LIB "atkins.lib"; bigint D=-3; wUnit(D); ==> 6
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