The following list is generated by hand, and may be incomplete.
After future revision of ccx2html the real data will be displayed
flt_min the minimum single precision floating point number, excluding denormalised numbers minfloat the minimum single precision floating point number, including denormalised numbers dbl_min the minimum double precision floating point number, excluding denormalised numbers mindouble the minimum double precision floating point number, including denormalised numbers flt_max the maximum single precision floating point number dbl_max the maximum double precision floating point number flt_epsilon Minimum single precision floating point number X such that 1+X does not equal X dbl_epsilon Minimum double precision floating point number X such that 1+X does not equal X
sqrt2 sqrt(2)
sqrt3 sqrt(3)
_1_sqrt2 1/sqrt(2)
_1_sqrt3 1/sqrt(3)
pi pi
_2pi 2*pi
pi_2 pi/2
pi_4 pi/4
_1_pi 1/pi
_2_pi 2/pi
_1_sqrtpi 1/sqrt(pi)
_2_sqrtpi 2/sqrt(pi)
e e
ln2 ln(2)
ln10 ln(10)
log2e log2(e)
log10e log10(e)
gamma gamma
lngamma ln(gamma)
etogamma e**gamma
c velocity of light (m/s)
yotta e+24 (Y)
zetta e+21 (Z)
exa e+18 (E)
peta e+15 (P)
tera e+12 (T)
giga e+09 (G)
mega e+06 (M)
kilo e+03 (k)
hecto e+02 (h)
deka e+01 (da)
deci e-01 (d)
centi e-02 (c)
milli e-03 (m)
micro e-06 (u)
nano e-09 (n)
pico e-12 (p)
femto e-15 (f)
atto e-18 (a)
zepto e-21 (z)
yocto e-24 (y)
radian radian
circle circle
degree degree
arcmin arcminute
arcsec arcsecond
steradian steradian
sphere sphere
square_degree square degree
square_arcmin square arcminute
square_arcsec square arcsecond
second second
minute minute
hour hour
day day
Implementation-defined limits usually defined in <limits.h>, <float.h>, and <values.h> as preprocessor defines. They are Inclusion of <casa/BasicSL/Constants.h is sufficient to ensure that they are defined for any particular implementation, and the correct functioning of the tConstants test program guarantees this.
In future use will be made of the (standard) numeric_limits template from the <limits> include file.
Refer to Section 3.2c, pp28-30 of
"The Annotated C++ Reference Manual",
Ellis, M.A., and Stroustrup, B.,
Addison-Wesley Publishing Company, 1990.
IBSN 0-201-51459-1.
and
Appendix B11, pp257-8 of
"The C Programming Language", 2nd ed.,
Kernighan, B.W., and Ritchie, D.M.,
Prentice Hall Software Series, 1988.
IBSN 0-13-110362-8.
CHAR_BIT 8 Maximum bits in a byte.
CHAR_MIN 0 or Minimum value of 'char'.
SCHAR_MIN
CHAR_MAX UCHAR_MAX or Maximum value of 'char'.
SCHAR_MAX
SCHAR_MIN -127 Minimum value of 'signed char'.
SCHAR_MAX +127 Maximum value of 'signed char'.
UCHAR_MAX 255 Maximum value of 'unsigned char'.
MB_LEN_MAX Maximum bytes in multibyte character.
SHRT_MIN -32767 Minimum value of 'short'.
SHRT_MAX +32767 Maximum value of 'short'.
USHRT_MAX 65535 Maximum value of 'unsigned short'.
INT_MIN -32767 Minimum value of 'int'.
INT_MAX +32767 Maximum value of 'int'.
UINT_MAX 65535 Maximum value of 'unsigned int'.
LONG_MIN -2147483647 Minimum value of 'long'.
LONG_MAX +2147483647 Maximum value of 'long'.
ULONG_MAX 4294967295 Maximum value of 'unsigned long'.
FLT_RADIX 2 Radix of exponent representation.
FLT_ROUNDS Floating point rounding mode for addition
-1: indeterminate
0: towards zero
1: to nearest
2: toward +infinity
3: toward -infinity
FLT_MIN_EXP Minimum negative integer N such that FLT_RADIX
DBL_MIN_EXP raised to the Nth minus 1 is a normalized
LDBL_MIN_EXP floating point number.
FLT_MAX_EXP Maximum integer N such that FLT_RADIX raised to
DBL_MAX_EXP the Nth minus 1 is representable.
LDBL_MAX_EXP
FLT_MIN_10_EXP -37 Minimum negative integer N such that 10 raised
DBL_MIN_10_EXP -37 to the Nth is in the range of normalized
LDBL_MIN_10_EXP -37 floating point numbers.
FLT_MAX_10_EXP 37 Maximum integer N such that 10 raised to the
DBL_MAX_10_EXP 37 Nth minus 1 is representable.
LDBL_MAX_10_EXP 37
FLT_MANT_DIG Number of base FLT_RADIX digits in mantissa.
DBL_MANT_DIG
LDBL_MANT_DIG
FLT_DIG 6 Decimal digits of precision.
DBL_DIG 10
LDBL_DIG 10
FLT_EPSILON 1E-5 Minimum floating point number X such that
(use C::flt_epsilon in preference to this)
DBL_EPSILON 1E-9 1.0 + X does not equal 1.0.
(use C::dbl_epsilon in preference to this)
LDBL_EPSILON 1E-9
FLT_MIN 1E-37 Minimum normalized positive floating point
(use C::flt_min in preference to this)
DBL_MIN 1E-37 number
(use C::dbl_min in preference to this)
LDBL_MIN 1E-37
FLT_MAX 1E+37 Maximum representable floating point number.
(use C::flt_max in preference to this)
DBL_MAX 1E+37
(use C::dbl_max in preference to this)
LDBL_MAX 1E+37
HIBITS Value of a short integer with only the high-order
bit set (in most implementations, 0x8000).
HIBITL Value of a long integer with only the high-order
bit set (in most implementations, 0x80000000).
MAXSHORT Maximum value of a signed short integer (in most
implementations, 0x7FFF = 32767).
MAXLONG Maximum value of a signed long integer (in most
implementations, 0x7FFFFFFF = 2147483647).
MAXINT Maximum value of a signed regular integer (usually
the same as MAXSHORT or MAXLONG).
MINFLOAT Minimum positive value of a single-precision
floating-point number (use C::minfloat in preference
to this)
MINDOUBLE Minimum positive value of a double-precision
floating-point number (use C::mindouble in preference
to this)
MAXFLOAT Maximum value of a single-precision floating-point number
MAXDOUBLE Maximum value of a double-precision floating-point number
FSIGNIF Number of significant bits in the mantissa of a
single-precision floating-point number.
DSIGNIF Number of significant bits in the mantissa of a
double-precision floating-point number.
Once cxx2html accepts the namespace type, the Dummy_Constants_Class can be removed.
Anyway, to use a constant (e.g. pi) use the C::pi construct now and later.