If arg is not FLOAT, it is converted to a FLOAT value, based on implicit type conversion rules. If the argument cannot be converted, an error is reported. For more information, see Teradata Vantage™ - Data Types and Literals, B035-1143.
If arg is a UDT, the following rules apply:
- The UDT must have an implicit cast to any of the following predefined types:
- Numeric
- Character
- DATE
To define an implicit cast for a UDT, use the CREATE CAST statement and specify the AS ASSIGNMENT clause. For more information, see Teradata Vantage™ - SQL Data Definition Language Syntax and Examples, B035-1144.
- Implicit type conversion of UDTs for system operators and functions, including hyperbolic and inverse hyperbolic functions, is a Teradata extension to the ANSI SQL standard. To disable this extension, set the DisableUDTImplCastForSysFuncOp field of the DBS Control Record to TRUE. For details, see Teradata Vantage™ - Database Utilities , B035-1102 .
Hyperbolic and inverse hyperbolic functions cannot be applied to the following types of arguments:
- BYTE or VARBYTE
- BLOB or CLOB
- CHARACTER or VARCHAR if the server character set is GRAPHIC
Examples: Representative Hyperbolic and Inverse Hyperbolic Function Expressions
The following are representative hyperbolic and inverse hyperbolic function expressions and results.
| Expression | Result |
|---|---|
| COSH(EXP(1)) | 7.61012513866229E 000 |
| SINH(1) | 1.17520119364380E 000 |
| TANH(0) | 0.00000000000000E 000 |
| ACOSH(3) | 1.76274717403909E 000 |
| ASINH(LOG(0.1)) | -8.81373587019543E -001 |
| ATANH(LN(0.5)) | -8.53988047997524E -001 |