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extern crate libc;
use array::Array;
use defines::AfError;
use error::HANDLE_ERROR;
use self::libc::{c_int};
use util::{AfArray, DimT, MutAfArray, MutDouble};
#[allow(dead_code)]
extern {
fn af_mean(out: MutAfArray, arr: AfArray, dim: DimT) -> c_int;
fn af_stdev(out: MutAfArray, arr: AfArray, dim: DimT) -> c_int;
fn af_median(out: MutAfArray, arr: AfArray, dim: DimT) -> c_int;
fn af_mean_weighted(out: MutAfArray, arr: AfArray, wts: AfArray, dim: DimT) -> c_int;
fn af_var_weighted(out: MutAfArray, arr: AfArray, wts: AfArray, dim: DimT) -> c_int;
fn af_var(out: MutAfArray, arr: AfArray, isbiased: c_int, dim: DimT) -> c_int;
fn af_cov(out: MutAfArray, X: AfArray, Y: AfArray, isbiased: c_int) -> c_int;
fn af_var_all(real: MutDouble, imag: MutDouble, arr: AfArray, isbiased: c_int) -> c_int;
fn af_mean_all(real: MutDouble, imag: MutDouble, arr: AfArray) -> c_int;
fn af_stdev_all(real: MutDouble, imag: MutDouble, arr: AfArray) -> c_int;
fn af_median_all(real: MutDouble, imag: MutDouble, arr: AfArray) -> c_int;
fn af_mean_all_weighted(real: MutDouble, imag: MutDouble, arr: AfArray, wts: AfArray) -> c_int;
fn af_var_all_weighted(real: MutDouble, imag: MutDouble, arr: AfArray, wts: AfArray) -> c_int;
fn af_corrcoef(real: MutDouble, imag: MutDouble, X: AfArray, Y: AfArray) -> c_int;
}
macro_rules! stat_func_def {
($doc_str: expr, $fn_name: ident, $ffi_fn: ident) => (
#[doc=$doc_str]
#[allow(unused_mut)]
pub fn $fn_name(input: &Array, dim: i64) -> Array {
unsafe {
let mut temp: i64 = 0;
let err_val = $ffi_fn(&mut temp as MutAfArray, input.get() as AfArray, dim as DimT);
HANDLE_ERROR(AfError::from(err_val));
Array::from(temp)
}
}
)
}
stat_func_def!("Mean along specified dimension", mean, af_mean);
stat_func_def!("Standard deviation along specified dimension", stdev, af_stdev);
stat_func_def!("Median along specified dimension", median, af_median);
macro_rules! stat_wtd_func_def {
($doc_str: expr, $fn_name: ident, $ffi_fn: ident) => (
#[doc=$doc_str]
#[allow(unused_mut)]
pub fn $fn_name(input: &Array, weights: &Array, dim: i64) -> Array {
unsafe {
let mut temp: i64 = 0;
let err_val = $ffi_fn(&mut temp as MutAfArray, input.get() as AfArray,
weights.get() as AfArray, dim as DimT);
HANDLE_ERROR(AfError::from(err_val));
Array::from(temp)
}
}
)
}
stat_wtd_func_def!("Weighted mean along specified dimension", mean_weighted, af_mean_weighted);
stat_wtd_func_def!("Weight variance along specified dimension", var_weighted, af_var_weighted);
#[allow(unused_mut)]
pub fn var(arr: &Array, isbiased: bool, dim: i64) -> Array {
unsafe {
let mut temp: i64 = 0;
let err_val = af_var(&mut temp as MutAfArray, arr.get() as AfArray,
isbiased as c_int, dim as DimT);
HANDLE_ERROR(AfError::from(err_val));
Array::from(temp)
}
}
#[allow(unused_mut)]
pub fn cov(x: &Array, y: &Array, isbiased: bool) -> Array {
unsafe {
let mut temp: i64 = 0;
let err_val = af_cov(&mut temp as MutAfArray, x.get() as AfArray,
y.get() as AfArray, isbiased as c_int);
HANDLE_ERROR(AfError::from(err_val));
Array::from(temp)
}
}
#[allow(unused_mut)]
pub fn var_all(input: &Array, isbiased: bool) -> (f64, f64) {
unsafe {
let mut real: f64 = 0.0;
let mut imag: f64 = 0.0;
let err_val = af_var_all(&mut real as MutDouble, &mut imag as MutDouble,
input.get() as AfArray, isbiased as c_int);
HANDLE_ERROR(AfError::from(err_val));
(real, imag)
}
}
macro_rules! stat_all_func_def {
($doc_str: expr, $fn_name: ident, $ffi_fn: ident) => (
#[doc=$doc_str]
#[allow(unused_mut)]
pub fn $fn_name(input: &Array) -> (f64, f64) {
unsafe {
let mut real: f64 = 0.0;
let mut imag: f64 = 0.0;
let err_val = $ffi_fn(&mut real as MutDouble, &mut imag as MutDouble,
input.get() as AfArray);
HANDLE_ERROR(AfError::from(err_val));
(real, imag)
}
}
)
}
stat_all_func_def!("Compute mean of all data", mean_all, af_mean_all);
stat_all_func_def!("Compute standard deviation of all data", stdev_all, af_stdev_all);
stat_all_func_def!("Compute median of all data", median_all, af_median_all);
macro_rules! stat_wtd_all_func_def {
($doc_str: expr, $fn_name: ident, $ffi_fn: ident) => (
#[doc=$doc_str]
#[allow(unused_mut)]
pub fn $fn_name(input: &Array, weights: &Array) -> (f64, f64) {
unsafe {
let mut real: f64 = 0.0;
let mut imag: f64 = 0.0;
let err_val = $ffi_fn(&mut real as MutDouble, &mut imag as MutDouble,
input.get() as AfArray, weights.get() as AfArray);
HANDLE_ERROR(AfError::from(err_val));
(real, imag)
}
}
)
}
stat_wtd_all_func_def!("Compute weighted mean of all data", mean_all_weighted, af_mean_all_weighted);
stat_wtd_all_func_def!("Compute weighted variance of all data", var_all_weighted, af_var_all_weighted);
#[allow(unused_mut)]
pub fn corrcoef(x: &Array, y: &Array) -> (f64, f64) {
unsafe {
let mut real: f64 = 0.0;
let mut imag: f64 = 0.0;
let err_val = af_corrcoef(&mut real as MutDouble, &mut imag as MutDouble,
x.get() as AfArray, y.get() as AfArray);
HANDLE_ERROR(AfError::from(err_val));
(real, imag)
}
}