www.openlinksw.com
docs.openlinksw.com

Book Home

Contents
Preface

Virtuoso Functions Guide

Administration
Aggregate Functions
Array Manipulation
BPEL APIs
Backup
Compression
Cursor
Date & Time Manipulation
Debug
Dictionary Manipulation
Encoding & Decoding
File Manipulation
Free Text
Hashing / Cryptographic
LDAP
Locale
Mail
Miscellaneous
Number
abs
atof
atoi
bit_and
bit_not
bit_or
bit_shift
bit_xor
ceiling
either
equ
exp
floor
isdouble
isfloat
isinteger
isnumeric
iszero
log
log10
lower
mod
power
randomize
rnd
sign
sqrt
trigonometric
Phrases
RDF data
Remote SQL Data Source
Replication
SOAP
SQL
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web & Internet
XML
XPATH & XQUERY

Functions Index

isdouble

returns true is argument is a double
isdouble ( arg anything);
Description

isdouble returns one if its argument is of type double precision float, zero otherwise.

isdouble(0.0)  		-> 1 (Decimal literals are by
				default converted to
				double precision numbers)