precision,setPrecision!

Usage

precision x
setPrecision!(x, n)

Signatures

precision:	% $\to$ MachineInteger
setPrecision!:	(%, MachineInteger) $\to$ %

Parameter	Type	Description
x	%	a float
n	MachineInteger	a precision

Description

precision(x) returns the precision acutally used for $x$, while setPrecision!(x, n) sets the precision for $x$ to be at least $n$ bits.

Remarks

Those functions are wrapper to the mpf_get_prec and mpf_set_prec GMP functions, so setPrecision! can involve a call to realloc.

See Also

defaultPrecision,setDefaultPrecision