| Publisher | Intel | ||
|---|---|---|---|
| Format | 905.9KB PDF | Date added | 01 Aug 2006 |
| Topics | Processors, Programming Languages, Application Development | ||
| Downloads | 11 | ||
High application performance is an important goal of the Intel compilers, even at default optimization levels. A number of optimizations involve transformations including: evaluation of constant expressions at compile time, hoisting invariant expressions out of loops, and changes in the order of evaluation of expressions that are not consistent with a strict interpretation of the ANSI or ISO standards for C, C++, and Fortran. These can result in differences in rounding and small variations in floating point results, which may be more or less accurate than the ANSI-conformant result. The Intel compilers provide command-line options that request the compiler not to perform optimizations that may be inconsistent with strict ANSI standards.
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