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Diffstat (limited to 'contrib/bug216610/go/fibber/fib.go')
-rw-r--r-- | contrib/bug216610/go/fibber/fib.go | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/contrib/bug216610/go/fibber/fib.go b/contrib/bug216610/go/fibber/fib.go new file mode 100644 index 0000000..49757cd --- /dev/null +++ b/contrib/bug216610/go/fibber/fib.go @@ -0,0 +1,32 @@ +// Package fibber implements a Fibonacci sequence generator using a C +// coded compute kernel (a .syso file). +package fibber + +import ( + "unsafe" +) + +// State is the native Go form of the C.state structure. +type State struct { + B, A uint32 +} + +// cPtr converts State into a C pointer suitable as an argument for +// sysoCaller. +func (s *State) cPtr() unsafe.Pointer { + return unsafe.Pointer(&s.B) +} + +// NewState initializes a Fibonacci Number sequence generator. Upon +// return s.A=0 and s.B=1 are the first two numbers in the sequence. +func NewState() *State { + s := &State{} + syso__fib_init.call(s.cPtr()) + return s +} + +// Next advances the state to the next number in the sequence. Upon +// return, s.B is the most recently calculated value. +func (s *State) Next() { + syso__fib_next.call(s.cPtr()) +} |