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7.5.20.0. testFraction
Procedure from library olga.lib (see olga_lib).
- Usage:
- testFraction(frac, locType, locData), vector frac, int locType,
list/intvec/vector locData
- Purpose:
- test if the given vector is a representation of a fraction in the
specified localization wrt. the checks from fracStatus
- Assume:
- Return:
- nothing
- Note:
- throws error if checks were not successful
Example:
| | LIB "olga.lib";
ring r = QQ[x,y,Dx,Dy];
def R = Weyl();
setring R;
list L = x;
vector frac = [x,Dx,x*Dx+2,x^2];
testFraction(frac, 0, L); // correct localization, no error
frac = [x,Dx,x*Dx,x^2];
testFraction(frac, 0, L); // incorrect localization, results in error
==> ? left and right representation are not equal in:x^2*gen(4)+x*Dx*gen(3\
)+x*gen(1)+Dx*gen(2)
==> ? leaving olga.lib::testFraction (0)
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