DeclarationsDeclarations
FunctionsFunctions
OperatorsOperators
StatementsStatements
SubroutinesSubroutines
TypesTypes
VariablesVariables
- Date and timeDate and time
- ESIESI
- GeolocationGeolocation
- Math constants limitsMath constants limits
  - math.1_PImath.1_PI
  - math.2PImath.2PI
  - math.2_PImath.2_PI
  - math.2_SQRTPImath.2_SQRTPI
  - math.Emath.E
  - math.FLOAT_DIGmath.FLOAT_DIG
  - math.FLOAT_EPSILONmath.FLOAT_EPSILON
  - math.FLOAT_MANT_DIGmath.FLOAT_MANT_DIG
  - math.FLOAT_MAXmath.FLOAT_MAX
  - math.FLOAT_MAX_10_EXPmath.FLOAT_MAX_10_EXP
  - math.FLOAT_MAX_EXPmath.FLOAT_MAX_EXP
  - math.FLOAT_MINmath.FLOAT_MIN
  - math.FLOAT_MIN_10_EXPmath.FLOAT_MIN_10_EXP
  - math.FLOAT_MIN_EXPmath.FLOAT_MIN_EXP
  - math.FLOAT_RADIXmath.FLOAT_RADIX
  - math.INTEGER_BITmath.INTEGER_BIT
  - math.INTEGER_MAXmath.INTEGER_MAX
  - math.INTEGER_MINmath.INTEGER_MIN
  - math.LN10math.LN10
  - math.LN2math.LN2
  - math.LOG10Emath.LOG10E
  - math.LOG2Emath.LOG2E
  - math.NANmath.NAN
  - math.NEG_HUGE_VALmath.NEG_HUGE_VAL
  - math.NEG_INFINITYmath.NEG_INFINITY
  - math.PHImath.PHI
  - math.PImath.PI
  - math.PI_2math.PI_2
  - math.PI_4math.PI_4
  - math.POS_HUGE_VALmath.POS_HUGE_VAL
  - math.POS_INFINITYmath.POS_INFINITY
  - math.SQRT1_2math.SQRT1_2
  - math.SQRT2math.SQRT2
  - math.TAUmath.TAU
- MiscellaneousMiscellaneous
- Segmented cachingSegmented caching
- ServerServer
- SizeSize
- TCP infoTCP info
- TLS and HTTPTLS and HTTP

math.2PI

FLOAT, read-only, constant.

The value of math.PI multiplied by two (Tau).

User contributed notes

We welcome comments that add use cases, ideas, tips, and caveats. All comments will be moderated before publication. To post support questions, visit our support center and we'll find you the help you need.