code clean-up

dev.pxd

-cdef extern from "gsl/gsl_math.h":
-
-    ctypedef struct gsl_function:
-        double (* function) (double x, void * params) nogil
-        void * params
-
-cdef extern from "gsl/gsl_integration.h":
-
-    ctypedef struct gsl_integration_workspace
-    ctypedef struct gsl_integration_qaws_table
-    ctypedef struct gsl_integration_qawo_table
-    ctypedef struct gsl_integration_cquad_workspace
-    cdef enum:
-        GSL_INTEG_GAUSS15 = 1
-        GSL_INTEG_GAUSS21 = 2
-        GSL_INTEG_GAUSS31 = 3
-        GSL_INTEG_GAUSS41 = 4
-        GSL_INTEG_GAUSS51 = 5
-        GSL_INTEG_GAUSS61 = 6
-    cdef enum gsl_integration_qawo_enum:
-        GSL_INTEG_COSINE, GSL_INTEG_SINE
-
-    gsl_integration_cquad_workspace *  gsl_integration_cquad_workspace_alloc (size_t n) nogil
-    
-    void  gsl_integration_cquad_workspace_free (gsl_integration_cquad_workspace * w) nogil
-
-    int gsl_integration_cquad (gsl_function * f, double a, double b, double epsabs, double epsrel, gsl_integration_cquad_workspace * workspace, double * result, double * abserr, size_t * nevals) nogil
-
-    gsl_integration_workspace *  gsl_integration_workspace_alloc(size_t n) nogil
-
-    void  gsl_integration_workspace_free(gsl_integration_workspace * w) nogil
-
-    int  gsl_integration_qag(gsl_function *f, double a, double b, double epsabs, double epsrel, size_t limit, int key, gsl_integration_workspace * workspace, double * result, double * abserr) nogil
-
-cdef extern from "gsl/gsl_rng.h":
-
-    ctypedef struct gsl_rng_type
-    ctypedef struct gsl_rng
-
-    cdef gsl_rng_type *gsl_rng_mt19937
-
-    gsl_rng *gsl_rng_alloc ( gsl_rng_type * T) nogil
-
-    unsigned long int gsl_rng_get ( gsl_rng * r) nogil
-
-    void gsl_rng_set ( gsl_rng * r, unsigned long int seed) nogil
-
-    void gsl_rng_free (gsl_rng * r) nogil
-
-cdef extern from "gsl/gsl_randist.h":
-
-    unsigned int gsl_ran_poisson ( gsl_rng * r, double mu) nogil
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