|  |  6.1 Limitations 
SINGULAR has the following limitations:
 
the characteristic of a prime field must be less than or equal to 2147483647 (2^31)
(the characteristic of a prime field in the factory routines must be less than 536870912 (2^29))
 (the characteristic of a prime field in the NTL routines must be less than NTL_SP_BOUND (2^30) on 32bit
machines - This is always the case since currently, only factory uses NTL.)
the number of elements in GF(p,n) must be less than 65536
the (weighted) degree of a monomial must be less or equal  than 2147483647
the rank of any free module
must be less or equal than 2147483647
the maximal allowed exponent of a ring variable
depends on the ordering of the ring and is at least 32767.
See also  Monomial orderings for setting other limits.
the precision of long floating point numbers (for ground field real)
must be less or equal  than 32767
integers (of type int) have the limited range
from -2147483648 to 2147483647
floating point numbers (type numberfrom fieldreal) have
a limited range which is machine dependent. A typical range is -1.0e-38
to 1.0e+38.  The string representation of overflow and underflow is
machine dependent, as well. For example "Inf" on Linux, or
"+.+00e+00" on HPUX.Their input syntax is given by
 scanf, but must start with a digit.
floating point numbers (type numberfrom fieldrealwith a precision p larger then 3) use internallympf_set_default_prec(3.5*p+1).Their input syntax is given by
 mpf_set_strfrom GMP, but must start with a digit.
the length of an identifier is unlimited but listvardisplays only the first 20 characters
statements may not contain more than 10000 tokens
tokens (i.e. strings, numbers, ...) may not be longer than 16382 characters
All input to SINGULAR must be 7-bit clean, i.e. special characters like the
the German Umlaute (ä, ö, etc.), or the French accent characters may
neither appear as input to SINGULAR, nor in libraries or procedure
definitions.
 
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