Download of Prec 1.5.0.3 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of the software is Avi Zehavi. Prec is included in Development Tools. The most popular versions of the tool are 1.5 and 1.0. The most frequent installation filenames for the program include: PRECPID19.exe and PrecStarter.exe etc.
From the developer:
The PreC application was designed to be a macro preprocessor in the sense that it copies its input to its output expanding macros as it foes. The unique feature of PreC is that its macro are actually written in standard C code, thus giving the use the entire power if C++ programming at the preprocessing stage.
You may want to check out more software, such as PGSuper, pcaWall or RMCalc, which might be similar to Prec.