cyclone/_posts/2016-11-20-Released-Cyclone-Scheme-0.3.1.md

layout	title	excerpt
post	Released Cyclone Scheme 0.3.1	Cyclone Scheme 0.3.1 is now available.

Features:

• Thanks to ecraven, added R7RS function exact-integer-sqrt to (scheme base).
• Allow the reader to recognize +inf.0, -inf.0, +nan.0, and -nan.0.
• Allow cond-expand to test for whether a library exists using the form (library {library name}).
• Added command line option -O to set the optimization level. For now there is -O0 to disable optimizations and the default setting to enable them. Going forward there will be more fine-grained control.
• Reduce size of compiled code by inlining constant values. This reduced the code size of various cyclone libraries by approximately 33%. Added other inlining as well to slightly improve performance.
• Increased allocation speed when objects are moved to the heap during a major GC.

Bug Fixes

• Only throw a divide by zero error for integer division. Floating point divide by zero is allowed and evaluates to nan.
• Modified SRFI 106 to be smarter about compiling AI_V4MAPPED and AI_ALL, which are not defined on OpenBSD.
• Fixed the member functions to always return the list when a value is found, instead of #t.
• Fixed string->number to return #f if the string cannot be converted.
• Fixed a bug where the optimizer would sometimes generate incorrect code when a mutating primitive (EG: set-car!) was passed an expression rather than an identifier as the variable argument.
• Prevent the runtime from crashing when a non-numeric value type is passed to a numeric function.