Borland International president Philippe Kahn claims that the company took more than 35,000 advance orders for its $99 Turbo C compiler for the IBM Personal Computer family before it started shipping the product last month, and says that licences to the source code for the Turbo C run-time library will be offered later this year. Speaking at a seminar for US government officials, Kahn said that the run-time library source code for Turbo C is being provided at the demand of serious C developers. Borland claims that Turbo C compiles at 10,000 lines of code per minute, implements Kernighan and Ritchie C, and supports the forthcoming American National Standards Institute C standard. The run-time library source will be available to registered Turbo C users from the Scotts Valley, California company in the third quarter; the library includes more than 300 functions and macros that end users can call from within their Turbo C programs. Turbo C supports the 8087 maths co-processor and emulates the 8087 if there is not one installed in the machine.