def build_fibonacci():
""" Builds an extension module with fibonacci calculators.
"""
mod = ext_tools.ext_module('fibonacci_ext')
a = 1 # this is effectively a type declaration
# recursive fibonacci in C
fib_code = """
int fib1(int a)
{
if(a <= 2)
return 1;
else
return fib1(a-2) + fib1(a-1);
}
"""
ext_code = """
return_val = fib1(a);
"""
fib = ext_tools.ext_function('c_fib1',ext_code,['a'])
fib.customize.add_support_code(fib_code)
mod.add_function(fib)
# looping fibonacci in C
fib_code = """
int fib2( int a )
{
int last, next_to_last, result;
if( a <= 2 )
return 1;
last = next_to_last = 1;
for(int i = 2; i < a; i++ )
{
result = last + next_to_last;
next_to_last = last;
last = result;
}
return result;
}
"""
ext_code = """
return_val = fib2(a);
"""
fib = ext_tools.ext_function('c_fib2',ext_code,['a'])
fib.customize.add_support_code(fib_code)
mod.add_function(fib)
mod.compile()
def build_fibonacci():
""" Builds an extension module with fibonacci calculators.
"""
mod = ext_tools.ext_module('fibonacci_ext')
a = 1 # this is effectively a type declaration
# recursive fibonacci in C
fib_code = """
int fib1(int a)
{
if(a <= 2)
return 1;
else
return fib1(a-2) + fib1(a-1);
}
"""
ext_code = """
return_val = fib1(a);
"""
fib = ext_tools.ext_function('c_fib1', ext_code, ['a'])
fib.customize.add_support_code(fib_code)
mod.add_function(fib)
# looping fibonacci in C
fib_code = """
int fib2( int a )
{
int last, next_to_last, result;
if( a <= 2 )
return 1;
last = next_to_last = 1;
for(int i = 2; i < a; i++ )
{
result = last + next_to_last;
next_to_last = last;
last = result;
}
return result;
}
"""
ext_code = """
return_val = fib2(a);
"""
fib = ext_tools.ext_function('c_fib2', ext_code, ['a'])
fib.customize.add_support_code(fib_code)
mod.add_function(fib)
mod.compile()
def build_increment_ext():
""" Build a simple extension with functions that increment numbers.
The extension will be built in the local directory.
"""
mod = ext_tools.ext_module('increment_ext')
a = 1 # effectively a type declaration for 'a' in the
# following functions.
ext_code = "return_val = PyInt_FromLong(a+1);"
func = ext_tools.ext_function('increment',ext_code,['a'])
mod.add_function(func)
ext_code = "return_val = PyInt_FromLong(a+2);"
func = ext_tools.ext_function('increment_by_2',ext_code,['a'])
mod.add_function(func)
mod.compile()
def build_increment_ext():
""" Build a simple extension with functions that increment numbers.
The extension will be built in the local directory.
"""
mod = ext_tools.ext_module('increment_ext')
# Effectively a type declaration for 'a' in the following functions.
a = 1
ext_code = "return_val = PyInt_FromLong(a+1);"
func = ext_tools.ext_function('increment', ext_code, ['a'])
mod.add_function(func)
ext_code = "return_val = PyInt_FromLong(a+2);"
func = ext_tools.ext_function('increment_by_2', ext_code, ['a'])
mod.add_function(func)
mod.compile()
