func init() {
var fin = func(f *C.mpf_t) { C.mpf_init(&(*f)[0]) }
fin(&a)
fin(&b)
fin(&cx)
fin(&cy)
fin(&x)
fin(&y)
}
// Int promises that the zero value is a 0, but in gmp
// the zero value is a crash. To bridge the gap, the
// init bool says whether this is a valid gmp value.
// doinit initializes f.i if it needs it. This is not inherent
// to FFI, just a mismatch between Go's convention of
// making zero values useful and gmp's decision not to.
func (f *Float) doinit() {
if f.init {
return
}
if f.prec != 0 {
C.mpf_init2(&f.i[0], C.mp_bitcnt_t(f.prec))
} else {
C.mpf_init(&f.i[0])
}
f.init = true
}
//every float created must be created here!
func newFloat() *Float {
var this = new(Float)
garbage[this] = true
C.mpf_init(&this.i[0])
return this
}