This function reads a double from the supplied null-terminated string, ignoring leading and trailing white space. AST__BAD is ereturned without error if the string is not a numerical value.

double astChr2Double( const char $\ast$str )

str

astChr2Double()

• A value of AST__BAD is returned if this function is invoked with the global error status set or if it should fail for any reason.