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 void sysvar_value ( char *name, double *val ) 
 char *name; // name of system variable double *val; // address of double to variable value 
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| Synopsis | #include "silver.h" 
 The sysvar_text function retrieves double value associated with the system variable specified by name , and copies it into the double at val . 
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| Parameters | name is a null-terminated string containing the name of the variable. val is the address of a double that is to receive the variable value. 
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| Return Value | none. 
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| See Also | 
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