Oracle 5.0 Reference Manual page 928

Name
[914]
TRUNCATE()
All mathematical functions return
• [908]
ABS(X)
Returns the absolute value of X.
mysql> SELECT ABS(2);
-> 2
mysql> SELECT ABS(-32);
-> 32
This function is safe to use with
• [908]
ACOS(X)
Returns the arc cosine of X, that is, the value whose cosine is X. Returns
to 1.
-1
mysql> SELECT ACOS(1);
-> 0
mysql> SELECT ACOS(1.0001);
-> NULL
mysql> SELECT ACOS(0);
-> 1.5707963267949
• [908]
ASIN(X)
Returns the arc sine of X, that is, the value whose sine is X. Returns
to 1.
mysql> SELECT ASIN(0.2);
-> 0.20135792079033
mysql> SELECT ASIN('foo');
+-------------+
| ASIN('foo') |
+-------------+
| 0 |
+-------------+
1 row in set, 1 warning (0.00 sec)
mysql> SHOW WARNINGS;
+---------+------+-----------------------------------------+
| Level | Code | Message
+---------+------+-----------------------------------------+
| Warning | 1292 | Truncated incorrect DOUBLE value: 'foo' |
+---------+------+-----------------------------------------+
• [908]
ATAN(X)
Returns the arc tangent of X, that is, the value whose tangent is X.
mysql> SELECT ATAN(2);
-> 1.1071487177941
mysql> SELECT ATAN(-2);
-> -1.1071487177941
• [908],
ATAN(Y,X) ATAN2(Y,X)
Returns the arc tangent of the two variables
X, except that the signs of both arguments are used to determine the quadrant of the result.
mysql> SELECT ATAN(-2,2);
-> -0.78539816339745
mysql> SELECT ATAN2(PI(),0);
Mathematical Functions
Description
Truncate to specified number of decimal places
in the event of an error.
NULL
values.
BIGINT
[908]
and Y. It is similar to calculating the arc tangent of
X
908
if is not in the range
NULL X
if is not in the range
NULL X
|
-1
Y /