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# mode: run
# tag: cpp, werror, cpp17, cppexecpolicies
from libcpp.numeric cimport (reduce, transform_reduce, inclusive_scan,
exclusive_scan, transform_inclusive_scan,
transform_exclusive_scan, gcd, lcm)
from libcpp.execution cimport seq
from libcpp.vector cimport vector
# Subtracts two integers.
cdef int subtract_integers(int lhs, int rhs):
return lhs - rhs
# Adds two integers.
cdef int add_integers(int lhs, int rhs):
return lhs + rhs
# Multiplies two integers.
cdef int multiply_integers(int lhs, int rhs):
return lhs * rhs
# Multiplies a integer with 2
cdef int multiply_with_2(int val):
return 2*val
def test_reduce(vector[int] v, int init):
"""
Test reduce.
0 + 1 = 1
1 + 2 = 3
3 + 3 = 6
>>> test_reduce([1, 2, 3], 0)
6
"""
return reduce(v.begin(), v.end(), init)
def test_reduce_with_bin_op(vector[int] v, int init):
"""
Test reduce with a binary operation (subtraction).
0 - 1 = -1
-1 - 2 = -3
-3 - 3 = -6
>>> test_reduce_with_bin_op([1, 2, 3], 0)
-6
"""
return reduce(v.begin(), v.end(), init, subtract_integers)
# def test_reduce_with_execpolicy(vector[int] v, int init):
# """
# Test reduce with execution policy.
# 0 + 1 = 1
# 1 + 2 = 3
# 3 + 3 = 6
# >>> test_reduce_with_execpolicy([1, 2, 3], 0)
# 6
# """
# return reduce(seq, v.begin(), v.end(), init)
def test_reduce_with_bin_op_and_execpolicy(vector[int] v, int init):
"""
Test reduce with execution policy and a binary operation (subtraction).
0 - 1 = -1
-1 - 2 = -3
-3 - 3 = -6
>>> test_reduce_with_bin_op_and_execpolicy([1, 2, 3], 0)
-6
"""
return reduce(seq, v.begin(), v.end(), init, subtract_integers)
def test_transform_reduce(vector[int] v1, vector[int] v2, int init):
"""
Test transform_reduce
>>> test_transform_reduce([1, 2, 3], [1, 2, 3], 0)
14
"""
return transform_reduce(v1.begin(), v1.end(), v2.begin(), init)
def test_transform_reduce_with_bin_red_op_and_bin_tran_op(vector[int] v1, vector[int] v2, int init):
"""
Test transform_reduce with a binary reduce and transform operations
>>> test_transform_reduce_with_bin_red_op_and_bin_tran_op([1, 2, 3], [1, 2, 3], 0)
14
"""
return transform_reduce(v1.begin(), v1.end(), v2.begin(), init, add_integers, multiply_integers)
def test_transform_reduce_with_bin_op_and_unary_op(vector[int] v1, vector[int] v2, int init):
"""
Test transform_reduce with a binary reduction and a unary transform operation
>>> test_transform_reduce_with_bin_op_and_unary_op([1, 2, 3], [1, 2, 3], 0)
12
"""
return transform_reduce(v1.begin(), v1.end(), init, add_integers, multiply_with_2)
# def test_transform_reduce_with_execpolicy(vector[int] v1, vector[int] v2, int init):
# """
# Test transform_reduce with a execution policy
# >>> test_transform_reduce_with_execpolicy([1, 2, 3], [1, 2, 3], 0)
# 14
# """
# return transform_reduce(seq, v1.begin(), v1.end(), v2.begin(), init)
def test_transform_reduce_with_execpolicy_bin_red_op_and_bin_tran_op(vector[int] v1, vector[int] v2, int init):
"""
Test transform_reduce with a execution policy and binary reduce and transform operations
>>> test_transform_reduce_with_execpolicy_bin_red_op_and_bin_tran_op([1, 2, 3], [1, 2, 3], 0)
14
"""
return transform_reduce(seq, v1.begin(), v1.end(), v2.begin(), init, add_integers, multiply_integers)
# def test_transform_reduce_with_execpolicy_bin_op_and_unary_op(vector[int] v1, vector[int] v2, int init):
# """
# Test transform_reduce with a execution policy and binary reduction and a unary transform operation
# >>> test_transform_reduce_with_execpolicy_bin_op_and_unary_op([1, 2, 3], [1, 2, 3], 0)
# 12
# """
# return transform_reduce(seq, v1.begin(), v1.end(), v2.begin(), init, add_integers, multiply_with_2)
def test_inclusive_scan(vector[int] v):
"""
Test inclusive_scan
>>> test_inclusive_scan([1, 2, 3, 4])
[1, 3, 6, 10]
"""
cdef vector[int] out = vector[int](v.size())
inclusive_scan(v.begin(), v.end(), out.begin())
return out
# def test_inclusive_scan_with_execpolicy(vector[int] v):
# """
# Test inclusive_scan with a execution policy
# >>> test_inclusive_scan_with_execpolicy([1, 2, 3, 4])
# [1, 3, 6, 10]
# """
# cdef vector[int] out
# inclusive_scan(seq, v.begin(), v.end(), out.begin())
# return out
def test_inclusive_scan_with_bin_op(vector[int] v):
"""
Test inclusive_scan with a binary operation
>>> test_inclusive_scan_with_bin_op([1, 2, 3, 4])
[1, 3, 6, 10]
"""
cdef vector[int] out = vector[int](v.size())
inclusive_scan(v.begin(), v.end(), out.begin(), add_integers)
return out
# def test_inclusive_scan_with_execpolicy_and_bin_op(vector[int] v):
# """
# Test inclusive_scan with a execution policy and a binary operation
# >>> test_inclusive_scan_with_execpolicy_and_bin_op([1, 2, 3, 4])
# [1, 3, 6, 10]
# """
# cdef vector[int] out
# inclusive_scan(seq, v.begin(), v.end(), out.begin(), add_integers)
# return out
def test_inclusive_scan_with_bin_op_and_init(vector[int] v, int init):
"""
Test inclusive_scan with a binary operation and a initial value
>>> test_inclusive_scan_with_bin_op_and_init([1, 2, 3, 4], 0)
[1, 3, 6, 10]
"""
cdef vector[int] out = vector[int](v.size())
inclusive_scan(v.begin(), v.end(), out.begin(), add_integers, init)
return out
# def test_inclusive_scan_with_execpolicy_bin_op_and_init(vector[int] v, int init):
# """
# Test inclusive_scan with a execution policy, a binary operation and a initial value
# >>> test_inclusive_scan_with_execpolicy_bin_op_and_init([1, 2, 3, 4], 0)
# [1, 3, 6, 10]
# """
# cdef vector[int] out = vector[int](v.size())
# inclusive_scan(seq, v.begin(), v.end(), out.begin(), add_integers, init)
# return out
def test_transform_inclusive_scan(vector[int] v):
"""
Test transform inclusive_scan
>>> test_transform_inclusive_scan([1, 2, 3, 4])
[2, 6, 12, 20]
"""
cdef vector[int] out = vector[int](v.size())
transform_inclusive_scan(v.begin(), v.end(), out.begin(), add_integers, multiply_with_2)
return out
# def test_transform_inclusive_scan_with_execpolicy(vector[int] v):
# """
# Test transform inclusive_scan with a execution policy
# >>> test_transform_inclusive_scan_with_execpolicy([1, 2, 3, 4])
# [2, 6, 12, 20 ]
# """
# cdef vector[int] out
# transform_inclusive_scan(seq, v.begin(), v.end(), out.begin(), add_integers, multiply_with_2)
# return out
def test_transform_inclusive_scan_with_init(vector[int] v, int init):
"""
Test transform inclusive_scan with an initial value
>>> test_transform_inclusive_scan_with_init([1, 2, 3, 4], 0)
[2, 6, 12, 20]
"""
cdef vector[int] out = vector[int](v.size())
transform_inclusive_scan(v.begin(), v.end(), out.begin(), add_integers, multiply_with_2, init)
return out
def test_transform_inclusive_scan_with_execpolicy_and_init(vector[int] v, int init):
"""
Test transform inclusive_scan with an initial value
>>> test_transform_inclusive_scan_with_execpolicy_and_init([1, 2, 3, 4], 0)
[2, 6, 12, 20]
"""
cdef vector[int] out = vector[int](v.size())
transform_inclusive_scan(seq, v.begin(), v.end(), out.begin(), add_integers, multiply_with_2, init)
return out
def test_exclusive_scan(vector[int] v, int init):
"""
Test exclusive_scan
>>> test_exclusive_scan([1, 2, 3, 4], 0)
[0, 1, 3, 6]
"""
cdef vector[int] out = vector[int](v.size())
exclusive_scan(v.begin(), v.end(), out.begin(), init)
return out
# def test_exclusive_scan_with_execpolicy(vector[int] v, int init):
# """
# Test exclusive_scan with a execution policy
# >>> test_exclusive_scan_with_execpolicy([1, 2, 3, 4], 0)
# [0, 1, 3, 6]
# """
# cdef vector[int] out
# exclusive_scan(seq, v.begin(), v.end(), out.begin(), init)
# return out
def test_exclusive_scan_with_bin_op(vector[int] v, int init):
"""
Test exclusive_scan with a binary operation
>>> test_exclusive_scan_with_bin_op([1, 2, 3, 4], 0)
[0, 1, 3, 6]
"""
cdef vector[int] out = vector[int](v.size())
exclusive_scan(v.begin(), v.end(), out.begin(), init, add_integers)
return out
def test_exclusive_scan_with_execpolicy_and_bin_op(vector[int] v, int init):
"""
Test exclusive_scan with a execution policy and a binary operation
>>> test_exclusive_scan_with_execpolicy_and_bin_op([1, 2, 3, 4], 0)
[0, 1, 3, 6]
"""
cdef vector[int] out = vector[int](v.size())
exclusive_scan(seq, v.begin(), v.end(), out.begin(), init, add_integers)
return out
def test_transform_exclusive_scan_with_execpolicy(vector[int] v, int init):
"""
Test transform_exclusive_scan
>>> test_transform_exclusive_scan_with_execpolicy([1, 2, 3, 4], 0)
[0, 2, 6, 12]
"""
cdef vector[int] out = vector[int](v.size())
transform_exclusive_scan(seq, v.begin(), v.end(), out.begin(), init, add_integers, multiply_with_2)
return out
def test_transform_exclusive_scan_with_execpolicy(vector[int] v, int init):
"""
Test transform_exclusive_scan with a execution policy
>>> test_transform_exclusive_scan_with_execpolicy([1, 2, 3, 4], 0)
[0, 2, 6, 12]
"""
cdef vector[int] out = vector[int](v.size())
transform_exclusive_scan(seq, v.begin(), v.end(), out.begin(), init, add_integers, multiply_with_2)
return out
def test_gcd(int a, int b):
"""
Test gcd
>>> test_gcd(12, 18)
6
"""
return gcd[int](a, b)
def test_lcm(int a, int b):
"""
Test lcm
>>> test_lcm(45, 75)
225
"""
return lcm[int](a, b)
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