Float keyword - Revision history

Sunjammer: Removing a blank line

2013-02-02T15:06:54Z

Removing a blank line

Sunjammer: Updating links

2011-08-15T11:22:50Z

Updating links

Sunjammer at 22:37, 2 August 2011

2011-08-02T22:37:51Z

Sunjammer: Fixing category

2011-08-02T22:27:58Z

Fixing category

Sunjammer: moved Float (dascript type) to Float keyword

2011-08-02T22:21:28Z

moved Float (dascript type) to Float keyword

Sunjammer: /* Persistence */

2009-11-20T00:02:40Z

‎Persistence

Sunjammer: /* Persistence */

2009-11-19T22:24:06Z

‎Persistence

Jassper: /* Persistence */

2009-08-01T03:36:22Z

‎Persistence

Sunjammer: Created page with 'NOTOC The '''float''' type represents a signed 32-bit floating-point value between -3.402823e38 and 3.402823e38. The default value is 0.0. == Literals == A literal is a tex...'

2009-07-30T23:22:04Z

Created page with '__NOTOC__ The '''float''' type represents a signed 32-bit floating-point value between -3.402823e38 and 3.402823e38. The default value is 0.0. == Literals == A literal is a tex...'

New page

__NOTOC__
The '''float''' type represents a signed 32-bit floating-point value between -3.402823e38 and 3.402823e38. The default value is 0.0.

== Literals ==

A literal is a textual representation of a particular value of a type.

A float literal is decimal (base 10) and consists of a string of decimal digits (0-9) followed by a decimal point. Optionally one or more decimal digits (the '''mantissa''') and/or a letter "f" suffix can follow the decimal point.

<dascript>
// valid float literals
float fLiteral1 = 1.;
float fLiteral2 = 1.2;
float fLiteral3 = 1.f;
float fLiteral4 = 1.2f;

// invalid float literals
float fInvalid1 = 1; // causes "Mismatched type" error
float fInvalid2 = .1; // causes "Unknown state in compiler" error
float fInvalid3 = 1f; // causes "Parsing variable list" error
float fInvalid4 = .1f; // causes "Unknown state in compiler" error
</dascript>

Note that since the decimal point is required even when there is no mantissa the "f" suffix is in fact totally redundant.

== Conversion ==

=== Explicit ===

The following functions can be used to convert another data type to a float:

* [[IntToFloat]]
* [[StringToFloat]]

The following functions can be used to convert a float to another data type:

* [[FloatToInt]]
* [[FloatToString]]
* [[ToString]]

=== Implicit ===

If an int and a float are mixed in an arithmetic expression the int is implicitly converted to a float without needing to use the [[IntToFloat]] function.

<dascript>
// addition
float fResult1 = 32 + 1.0;

// subtraction
float fResult2 = 32 - 1.0;

// multiplication
float fResult3 = 32 * 1.0;

// division
float fResult4 = 32 / 1.0;
</dascript>

This is true whether the values are literals (above), variable values or values returned by functions.

== Persistence ==

The following functions allow a float to exist outside of the scope of the current script by storing it on an object, effect or event:

* [[GetLocalFloat]]
* [[GetEffectFloat]]
* [[GetEventFloat]]

The following functions allow a location which exist outside of the scope of the current script to be used in the current script by retrieving it from an object, effect or event:

* [[SetLocalFloat]]
* [[SetEffectFloat]]
* [[SetEventFloat]]



== Examples ==

<dascript>
void main()
{
// uninitialised: value = 0.0
float fDefault;

// initialised: value = 42.0
float fSpecific = 42.0;
}
</dascript>

== See Also ==

[[PrintFloat]]

[[Category: DAScript types]]

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	== Examples ==		== Examples ==

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	== Examples ==		== Examples ==

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 == Literals ==
-A literal is a textual representation of a particular value of a type.
+A float [[Scripting terminology#literal|literal]] is a decimal (base 10) number and consists of a string of decimal digits (0-9) followed by a decimal point.  Optionally one or more decimal digits (the '''mantissa''') and/or a letter "f" suffix can follow the decimal point.
-−
-A float literal is decimal (base 10) and consists of a string of decimal digits (0-9) followed by a decimal point.  Optionally one or more decimal digits (the '''mantissa''') and/or a letter "f" suffix can follow the decimal point.
 <dascript>

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 * [[GetEffectFloat]]
 * [[GetEventFloat]]
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 The following functions allow a float to exist outside of the scope of the current script by storing it on an object, effect or event:
 * [[GetLocalFloat]]
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 * [[GetEventFloat]]
 <!-- == Special == -->
 <!-- -->
 == Examples ==

Float keyword - Revision history

Sunjammer: Removing a blank line

Sunjammer: Updating links

Sunjammer at 22:37, 2 August 2011

Sunjammer: Fixing category

Sunjammer: moved Float (dascript type) to Float keyword

Sunjammer: /* Persistence */

Sunjammer: /* Persistence */

Jassper: /* Persistence */

Sunjammer: Created page with '__NOTOC__ The '''float''' type represents a signed 32-bit floating-point value between -3.402823e38 and 3.402823e38. The default value is 0.0. == Literals == A literal is a tex...'

Sunjammer: Created page with 'NOTOC The '''float''' type represents a signed 32-bit floating-point value between -3.402823e38 and 3.402823e38. The default value is 0.0. == Literals == A literal is a tex...'