bignum.hfile
Classes
Summary
This header defines the BigNumber intrinsic class.
Summary of Classes
Summary of Global Functions
(none)
Summary of Macros
BignumCommas BignumCompact BignumEuroStyle BignumExp BignumExpSign BignumKeepTrailingZeros BignumLeadingZero BignumMaxSigDigits BignumPoint BignumPosSpace BignumSign NumTypeInf NumTypeNAN NumTypeNInf NumTypeNum NumTypeNZero NumTypePInf NumTypePZero NumTypeZero
Summary of Enums
(none)
Summary of Templates
(none)
Global Functions
(none)
Macros
BignumCommas
0x0020
insert commas to denote thousands, millions, etc
BignumCompact
0x0100
“Compact” format: use the shorter of the regular format and scientific
notation. If the scientific notation exponent is less than -4 or greater
than or equal to the number of digits after the decimal point, we’ll use
scientific notation; otherwise we’ll use the plain format.
BignumEuroStyle
0x0080
use European-style formatting: use a comma instead of a period for the
decimal point, and use periods instead of commas to set off thousands,
millions, etc
BignumExp
0x0002
always show in exponential format (scientific notation, as in “1.0e20”)
BignumExpSign
0x0004
always show a sign in the exponent, even if positive
BignumKeepTrailingZeros
0x0400
Keep trailing zeros. If there’s a maxDigits value, this keeps enough
trailing zeros so that the number of digits shown equals maxDigits. By
default, trailing zeros after the decimal point are removed.
BignumLeadingZero
0x0008
show a zero before the decimal point - this is only relevant in
non-exponential format when the number is between -1 and +1
BignumMaxSigDigits
0x0200
maxDigits counts only significant digits; leading zeros aren’t counted
against the maximum.
BignumPoint
0x0010
always show a decimal point
BignumPosSpace
0x0040
show a leading space if the number is positive
BignumSign
0x0001
always show a sign, even if positive
NumTypeInf
(NumTypePInf | NumTypeNInf)
no description available
NumTypeNAN
0x0002
Number type: “Not a number” (NaN). This indicates that the value is the
result of a calculation with invalid input(s). Currently there are no
BigNumber calculations that return NaNs, as all functions on invalid
inputs throw errors instead. But it’s possible to construct NaN value,
such as by reading an IEEE 754-2008 NaN value from a file via
unpackBytes().
NumTypeNInf
0x0008
no description available
NumTypeNum
0x0001
Number type: ordinary number.
NumTypeNZero
0x0020
no description available
NumTypePInf
0x0004
Number type: positive infinity, negative infinity. These indicate a
value that overflowed the capacity of the BigNumber type, or a
calculation that yields infinity (e.g., tan(pi/2)). Currently there are
no BigNumber calculations that return Infinities, as all functions where
an overflow is possible throw errors instead. But it’s possible to
construct an Infinity value, such as by reading an IEEE 754-2008
Infinity value from a file via unpackBytes().
NumTypePZero
0x0010
Number type: zero, positive or negative. Mathematically, zero is neither
positive nor negative, but the BigNumber type retains a sign for all
values, even zeros. Negative zeros can come from calculations that yield
negative results with absolute values too small for the internal
representation. It’s also possible to construct a negative zero, such as
by reading an IEEE 754-2008 negative zero value from a file via
unpackBytes().
NumTypeZero
(NumTypePZero | NumTypeNZero)
no description available
Enums
(none)
Templates
(none)
TADS 3 Library Manual
Generated on 5/16/2013 from TADS version 3.1.3