Answer the byte of the receiver that contains the sign bit
1.81.2 FloatQ class: characterization
decimalDigits
Return the number of decimal digits of precision for a FloatQ.
Technically, if P is the precision for the representation, then
the decimal precision Q is the maximum number of decimal digits
such that any floating point number with Q base 10 digits can be
rounded to a floating point number with P base 2 digits and back
again, without change to the Q decimal digits.
e
Returns the value of e. Hope is that it is precise enough
emax
Return the maximum allowable exponent for a FloatQ that is finite.
emin
Return the maximum allowable exponent for a FloatQ that is finite.
fmax
Return the largest normalized FloatQ that is not infinite.
fminNormalized
Return the smallest normalized FloatQ that is > 0
infinity
Return a FloatQ that represents positive infinity.
ln10
Returns the value of ln 10. Hope is that it is precise enough
log10Base2
Returns the value of log2 10. Hope is that it is precise enough
nan
Return a FloatQ that represents a mathematically indeterminate value
(e.g. Inf - Inf, Inf / Inf).
negativeInfinity
Return a FloatQ that represents negative infinity.
pi
Returns the value of pi. Hope is that it is precise enough
precision
Answer the number of bits in the mantissa. 1 + (2^-precision) = 1
1.81.3 FloatQ class: converting
coerce: aNumber
Answer aNumber converted to a FloatQ
1.81.4 FloatQ: built ins
* arg
Multiply the receiver and arg and answer another Number
+ arg
Sum the receiver and arg and answer another Number
- arg
Subtract arg from the receiver and answer another Number
/ arg
Divide the receiver by arg and answer another FloatQ
< arg
Answer whether the receiver is less than arg
<= arg
Answer whether the receiver is less than or equal to arg
= arg
Answer whether the receiver is equal to arg
> arg
Answer whether the receiver is greater than arg
>= arg
Answer whether the receiver is greater than or equal to arg
asFloatD
Answer the receiver converted to a FloatD
asFloatE
Answer the receiver converted to a FloatE
exponent
Answer the exponent of the receiver in mantissa*2^exponent
representation ( |mantissa|<=1 )
fractionPart
Answer the fractional part of the receiver
timesTwoPower: arg
Answer the receiver multiplied by 2^arg
truncated
Truncate the receiver towards zero and answer the result
~= arg
Answer whether the receiver is not equal to arg
1.81.5 FloatQ: coercing
asFloatQ
Just defined for completeness. Return the receiver.
coerce: aNumber
Coerce aNumber to the receiver's class
generality
Answer the receiver's generality
unity
Coerce 1 to the receiver's class
zero
Coerce 0 to the receiver's class
1.81.6 FloatQ: converting
half
Coerce 0.5 to the receiver's class
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on August, 19 2010
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