Arbitrary for a single scalar param — integers for n/incx/incy, floats for alpha/c/s.
n
incx
incy
alpha
c
s
loaded JSON param spec; spec.type selects integer vs float, spec.range gives bounds
spec.type
spec.range
fast-check arbitrary that generates a single scalar matching the param spec
Arbitrary for a single scalar param — integers for
n/incx/incy, floats foralpha/c/s.