1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2004-2008 Jean Privat <jean@pryen.org>
5 # This file is free software, which comes along with NIT. This software is
6 # distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
7 # without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
8 # PARTICULAR PURPOSE. You can modify it is you want, provided this header
9 # is kept unaltered, and a notification of the changes is added.
10 # You are allowed to redistribute it and sell it, alone or is a part of
13 # Mathematical operations
20 fun rand
: Int is extern "kernel_Int_Int_rand_0"
21 fun bin_and
(i
: Int): Int is extern "kernel_Int_Int_binand_0"
22 fun bin_or
(i
: Int): Int is extern "kernel_Int_Int_binor_0"
23 fun bin_xor
(i
: Int): Int is extern "kernel_Int_Int_binxor_0"
27 fun sqrt
: Float is extern "kernel_Float_Float_sqrt_0"
28 fun cos
: Float is extern "kernel_Float_Float_cos_0"
29 fun sin
: Float is extern "kernel_Float_Float_sin_0"
30 fun tan
: Float is extern "kernel_Float_Float_tan_0"
31 fun acos
: Float is extern "kernel_Float_Float_acos_0"
32 fun asin
: Float is extern "kernel_Float_Float_asin_0"
33 fun atan
: Float is extern "kernel_Float_Float_atan_0"
35 fun pow
(e
: Float): Float is extern "kernel_Float_Float_pow_1"
36 fun log
: Float is extern "kernel_Float_Float_log_0"
37 fun exp
: Float is extern "kernel_Float_Float_exp_0"
39 fun rand
: Float is extern "kernel_Float_Float_rand_0"
40 fun hypot_with
( b
: Float ) : Float is extern "hypotf"
43 redef class Collection[ E
]
44 # Return a random element in the collection
47 if is_empty
then return null
48 var rand_index
= length
.rand
51 if rand_index
== 0 then return e
58 fun atan2
(x
: Float, y
: Float): Float is extern "kernel_Any_Any_atan2_2"
59 fun pi
: Float is extern "kernel_Any_Any_pi_0"
60 fun srand_from
(x
: Int) is extern "kernel_Any_Any_srand_from_1"
61 fun srand
is extern "kernel_Any_Any_srand_0"