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Sourcecode: qfits version File versions  Download package

double qfits_header_getdouble ( const qfits_header hdr,
const char *  key,
double  errval 
)

Return the value associated to a key, as a double.

Parameters:
hdr qfits_header to parse
key key to find
errval default value to return if nothing is found
Returns:
double
Finds the value associated to the given key and return it as a double. Returns errval if no matching key is found or no value is attached.

Definition at line 756 of file qfits_header.c.

References qfits_header_getstr().

{
    char    *    c ;

    if (hdr==NULL || key==NULL) return errval ;

    c = qfits_header_getstr(hdr, key);
    if (c==NULL) return errval ;
    return atof(c);
}


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