Double negative would have found a more flattering way to say so. Instead, some kind of problem is implied, though Mr. Jones possesses basic competence at his tasks. Discussing English grammar, the term "double negative" is often though not universally applied to the non-standard use of a second negative as an intensifier to a negation. Double negatives are usually associated with regional and ethnical dialects such as Southern American English, African American Vernacular English, and various British regional dialects. Indeed, they were used in Middle English. Historically, Chaucer made extensive use of double, triple, and even quadruple negatives in his "Canterbury Tales".
Quadruple-precision floating-point format switch) or simply as being synonymous with double precision (e.g. Microsoft Visual C++), rather than as quadruple precision. On a few other architectures, some C/C++ compilers implement codice_8 as quadruple precision, e.g. gcc on PowerPC (as double-double) and SPARC, or the Sun Studio compilers on SPARC. Even if codice_8 is not quadruple precision, however, some C/C++ compilers provide a nonstandard quadruple-precision type as an extension. For example, gcc provides a quadruple-precision type called codice_14 for x86, x86-64 and Itanium CPUs, and on PowerPC as IEEE 128-bit floating-point using the -mfloat128-hardware or -mfloat128 options; and some versions of Intel's C/C++ compiler