diff options
Diffstat (limited to 'sql/spatial.cc')
| -rw-r--r-- | sql/spatial.cc | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/sql/spatial.cc b/sql/spatial.cc index 939e7d2a3b4..69d0c15748a 100644 --- a/sql/spatial.cc +++ b/sql/spatial.cc @@ -17,7 +17,28 @@ #ifdef HAVE_SPATIAL -#define MAX_DIGITS_IN_DOUBLE 16 +/* + exponential notation : + 1 sign + 1 number before the decimal point + 1 decimal point + 14 number of significant digits (see String::qs_append(double)) + 1 'e' sign + 1 exponent sign + 3 exponent digits + == + 22 + + "f" notation : + 1 optional 0 + 1 sign + 14 number significant digits (see String::qs_append(double) ) + 1 decimal point + == + 17 +*/ + +#define MAX_DIGITS_IN_DOUBLE 22 /***************************** Gis_class_info *******************************/ |