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Nasal library: Difference between revisions
Add Extension functions new in FG 2020.1
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== Extension functions new in FG 2020.1 == | |||
The following functions have been added to the nasal core library and will be released with FlightGear version 2020.1. | |||
Befor the release they are available in the development branch "next". | |||
=== isint() === | |||
Returns 1 if argument has a numeric value and x == floor(x), e.g. integer | |||
=== isnum() === | |||
{{Nasal doc | |||
|syntax = isnum(x); | |||
|source = {{simgear file|simgear/nasal/lib.c|t=Source}} | |||
|text = Returns 1 if x has a numeric value otherwise 0. | |||
}} | |||
=== isghost() === | |||
Returns 1 if type or argument is a ghost, otherwise 0. | |||
=== isstr() === | |||
Returns 1 if type or argument is a string, otherwise 0. | |||
=== isvec() === | |||
Returns 1 if type or argument is a vector, otherwise 0. | |||
=== ishash() === | |||
Returns 1 if type or argument is a hash, otherwise 0. | |||
=== isfunc() === | |||
Returns 1 if type or argument is a function, otherwise 0. | |||
=== vecindex() === | |||
{{Nasal doc | |||
|syntax = vecindex(vector, value); | |||
|source = {{simgear file|simgear/nasal/lib.c|t=Source}} | |||
|text = Returns the index of value or nil, if value is not found in vector. | |||
}} | |||
== Variables == | == Variables == | ||
Various global constants (technically variables) are provided for use in converting between different units. They are all found in {{fgdata file|Nasal/globals.nas|text=$FG_ROOT/Nasal/globals.nas}}. | Various global constants (technically variables) are provided for use in converting between different units. They are all found in {{fgdata file|Nasal/globals.nas|text=$FG_ROOT/Nasal/globals.nas}}. | ||