Description

Use to read a floating point value from a file. Command will fail if at the end of the file.

The following is a listing of the different cast types.

Note that data can be lost when casting. 'Signed' means the value can be negative. 'Unsigned' means value will always be positive.

Cast	Description
`c`	Reads a signed character, or signed 8-bit (1 byte) value, and converts it to a float
`uc`	Reads an unsigned character, or unsigned 8-bit (1 byte) value, and converts it to a float
`s`	Reads a signed short integer, or signed 16-bit (2 bytes) value, and converts it to a float
`us`	Reads an unsigned short integer, or unsigned 16-bit (2 bytes) value, and converts it to a float
`i`	Reads a signed integer, or signed 32-bit (4 bytes) value, and converts it to a float
`ui`	Reads an unsigned integer, or unsigned 32-bit (4 bytes) value, and converts it to a float
`f`	Reads a floating point value, a 32-bit (4 byte) value, and converts it to a float

Functional area

Disk I/O

Command syntax

Syntax

readFloat fileID [-cast string]

Arguments

Name	Type	Required	Comments
`fileID`	int		ID of file previously opened with fileOpen

Flags

Name	Flag arguments	Argument type	Exclusive to	Comments
`cast`	1	string	—	Data type to cast from. Possible types are listed above. Note that data can be lost when casting.

Return value

float

Examples

//Read example
float $val;
int $fileID;
int $fileID = `fileOpen "C:/FileTesting.txt" "r"`;
  
// Read the boolean value
$val = `readFloat $fileID`;
  
fileClose $fileID; //make sure to close the file
  
// Display the value
print $val;

Additional information

Related commands

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