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from
ltypes
import
i8
,
i16
,
i32
,
i64
,
f32
,
f64
,
c32
,
c64
,
overload
#from sys import exit
def
ord
(
s
:
str
)
->
i32
:
# currently supports characters with unicode value between 32 to 126
"""
Returns an integer representing the Unicode code
point of a given unicode character. This is the inverse of `chr()`.
"""
if
len
(
s
)
!=
1
:
return
-
1
# not a character
i
:
i32
for
i
in
range
(
32
,
127
):
if
chr
(
i
)
==
s
:
return
i
def
chr
(
i
:
i32
)
->
str
:
# currently supports unicode values between 32 to 126
"""
Returns the string representing a unicode character from
the given Unicode code point. This is the inverse of `ord()`.
"""
if
i
<
32
or
i
>
126
:
return
"Not yet supported"
all_chars
:
str
all_chars
=
' !"#$%&
\'
()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[
\\
]^_`abcdefghijklmnopqrstuvwxyz{|}~'
return
all_chars
[
i
-
32
]
#: abs() as a generic procedure.
#: supported types for argument:
#: i8, i16, i32, i64, f32, f64, bool, c32, c64
@
overload
def
abs
(
x
:
f64
)
->
f64
:
"""
Return the absolute value of `x`.
"""
result
:
f64
if
x
>=
0.0
:
result
=
x
else
:
result
=
-
x
return
result
@
overload
def
abs
(
x
:
f32
)
->
f32
:
if
x
>=
f32
(
0.0
):
return
x
else
:
return
-
x
@
overload
def
abs
(
x
:
i8
)
->
i8
:
if
x
>=
i8
(
0
):
return
x
else
:
return
-
x
@
overload
def
abs
(
x
:
i16
)
->
i16
:
if
x
>=
i16
(
0
):
return
x
else
:
return
-
x
@
overload
def
abs
(
x
:
i32
)
->
i32
:
if
x
>=
0
:
return
x
else
:
return
-
x
@
overload
def
abs
(
x
:
i64
)
->
i64
:
if
x
>=
i64
(
0
):
return
x
else
:
return
-
x
@
overload
def
abs
(
b
:
bool
)
->
i32
:
if
b
:
return
1
else
:
return
0
@
overload
def
abs
(
c
:
c32
)
->
f32
:
a
:
f32
b
:
f32
a
=
c
.
real
b
=
_lfortran_caimag
(
c
)
return
f32
((
a
**
f32
(
2
)
+
b
**
f32
(
2
))
**
f32
(
1
/
2
))
@
overload
def
abs
(
c
:
c64
)
->
f64
:
a
:
f64
b
:
f64
a
=
c
.
real
b
=
_lfortran_zaimag
(
c
)
return
(
a
**
2.0
+
b
**
2.0
)
**
(
1
/
2
)
@
interface
def
len
(
s
:
str
)
->
i32
:
"""
Return the length of the string `s`.
"""
pass
#: pow() as a generic procedure.
#: supported types for arguments:
#: (i32, i32), (i64, i64), (f64, f64),
#: (f32, f32), (i32, f64), (f64, i32),
#: (i32, f32), (f32, i32), (bool, bool), (c32, i32)
@
overload
def
pow
(
x
:
i32
,
y
:
i32
)
->
f64
:
"""
Returns x**y.
"""
return
f64
(
x
**
y
)
@
overload
def
pow
(
x
:
i64
,
y
:
i64
)
->
f64
:
return
f64
(
x
**
y
)
@
overload
def
pow
(
x
:
f32
,
y
:
f32
)
->
f32
:
return
x
**
y
@
overload
def
pow
(
x
:
f64
,
y
:
f64
)
->
f64
:
"""
Returns x**y.
"""
return
x
**
y
@
overload
def
pow
(
x
:
i32
,
y
:
f32
)
->
f32
:
return
f32
(
x
)
**
y
@
overload
def
pow
(
x
:
f32
,
y
:
i32
)
->
f32
:
return
x
**
f32
(
y
)
@
overload
def
pow
(
x
:
i32
,
y
:
f64
)
->
f64
:
return
f64
(
x
)
**
y
@
overload
def
pow
(
x
:
f64
,
y
:
i32
)
->
f64
:
return
x
**
f64
(
y
)
@
overload
def
pow
(
x
:
bool
,
y
:
bool
)
->
i32
:
if
y
and
not
x
:
return
0
return
1
@
overload
def
pow
(
c
:
c32
,
y
:
i32
)
->
c32
:
return
c
**
c32
(
y
)
def
bin
(
n
:
i32
)
->
str
:
"""
Returns the binary representation of an integer `n`.
"""
if
n
==
0
:
return
'0b0'
prep
:
str
prep
=
'0b'
if
n
<
0
:
n
=
-
n
prep
=
'-0b'
res
:
str
res
=
''
if
(
n
-
_lpython_floordiv
(
n
,
2
)
*
2
)
==
0
:
res
+=
'0'
else
:
res
+=
'1'
while
n
>
1
:
n
=
_lpython_floordiv
(
n
,
2
)
if
(
n
-
_lpython_floordiv
(
n
,
2
)
*
2
)
==
0
:
res
+=
'0'
else
:
res
+=
'1'
return
prep
+
res
[::
-
1
]
def
hex
(
n
:
i32
)
->
str
:
"""
Returns the hexadecimal representation of an integer `n`.
"""
hex_values
:
list
[
str
]
hex_values
=
[
'0'
,
'1'
,
'2'
,
'3'
,
'4'
,
'5'
,
'6'
,
'7'
,
'8'
,
'9'
,
'a'
,
'b'
,
'c'
,
'd'
,
'e'
,
'f'
]
if
n
==
0
:
return
'0x0'
prep
:
str
prep
=
'0x'
if
n
<
0
:
prep
=
'-0x'
n
=
-
n
res
:
str
res
=
""
remainder
:
i32
while
n
>
0
:
remainder
=
n
-
_lpython_floordiv
(
n
,
16
)
*
16
n
-=
remainder
n
=
_lpython_floordiv
(
n
,
16
)
res
+=
hex_values
[
remainder
]
return
prep
+
res
[::
-
1
]
def
oct
(
n
:
i32
)
->
str
:
"""
Returns the octal representation of an integer `n`.
"""
_values
:
list
[
str
]
_values
=
[
'0'
,
'1'
,
'2'
,
'3'
,
'4'
,
'5'
,
'6'
,
'7'
,
'8'
,
'9'
,
'a'
,
'b'
,
'c'
,
'd'
,
'e'
,
'f'
]
if
n
==
0
:
return
'0o0'
prep
:
str
prep
=
'0o'
if
n
<
0
:
prep
=
'-0o'
n
=
-
n
res
:
str
res
=
""
remainder
:
i32
while
n
>
0
:
remainder
=
n
-
_lpython_floordiv
(
n
,
8
)
*
8
n
-=
remainder
n
=
_lpython_floordiv
(
n
,
8
)
res
+=
_values
[
remainder
]
return
prep
+
res
[::
-
1
]
#: round() as a generic procedure.
#: supported types for argument:
#: i8, i16, i32, i64, f32, f64, bool
@
overload
def
round
(
value
:
f64
)
->
i32
:
"""
Rounds a floating point number to the nearest integer.
"""
i
:
i32
i
=
i32
(
value
)
f
:
f64
f
=
abs
(
value
-
f64
(
i
))
if
f
<
0.5
:
return
i
elif
f
>
0.5
:
return
i
+
1
else
:
if
i
-
_lpython_floordiv
(
i
,
2
)
*
2
==
0
:
return
i
else
:
return
i
+
1
@
overload
def
round
(
value
:
f32
)
->
i32
:
i
:
i32
i
=
i32
(
value
)
f
:
f64
f
=
f64
(
abs
(
value
-
f32
(
i
)))
if
f
<
0.5
:
return
i
elif
f
>
0.5
:
return
i
+
1
else
:
if
i
-
_lpython_floordiv
(
i
,
2
)
*
2
==
0
:
return
i
else
:
return
i
+
1
@
overload
def
round
(
value
:
i32
)
->
i32
:
return
value
@
overload
def
round
(
value
:
i64
)
->
i64
:
return
value
@
overload
def
round
(
value
:
i8
)
->
i8
:
return
value
@
overload
def
round
(
value
:
i16
)
->
i16
:
return
value
@
overload
def
round
(
b
:
bool
)
->
i32
:
return
abs
(
b
)
#: complex() as a generic procedure.
#: supported types for arguments:
#: (f64, f64), (f32, f64), (f64, f32), (f32, f32),
#: (i32, i32), (i64, i64), (i32, i64), (i64, i32)
@
interface
@
overload
def
complex
()
->
c64
:
return
c64
(
0
)
+
c64
(
0
)
*
1j
@
interface
@
overload
def
complex
(
x
:
f64
)
->
c64
:
return
c64
(
x
)
+
c64
(
0
)
*
1j
@
interface
@
overload
def
complex
(
x
:
i32
)
->
c32
:
return
c32
(
x
)
+
c32
(
0
)
*
1j
@
interface
@
overload
def
complex
(
x
:
f32
)
->
c32
:
return
c32
(
x
)
+
c32
(
0
)
*
1j
@
interface
@
overload
def
complex
(
x
:
i64
)
->
c64
:
return
c64
(
x
)
+
c64
(
0
)
*
1j
@
interface
@
overload
def
complex
(
x
:
f64
,
y
:
f64
)
->
c64
:
"""
Return a complex number with the given real and imaginary parts.
"""
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
@
overload
def
complex
(
x
:
f32
,
y
:
f32
)
->
c32
:
return
c32
(
x
)
+
c32
(
y
)
*
c32
(
1j
)
@
interface
@
overload
def
complex
(
x
:
f32
,
y
:
f64
)
->
c64
:
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
@
overload
def
complex
(
x
:
f64
,
y
:
f32
)
->
c64
:
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
@
overload
def
complex
(
x
:
i32
,
y
:
i32
)
->
c64
:
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
@
overload
def
complex
(
x
:
i64
,
y
:
i64
)
->
c64
:
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
@
overload
def
complex
(
x
:
i32
,
y
:
i64
)
->
c64
:
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
@
overload
def
complex
(
x
:
i64
,
y
:
i32
)
->
c64
:
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
@
overload
def
complex
(
x
:
i32
,
y
:
f64
)
->
c64
:
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
@
overload
def
complex
(
x
:
f64
,
y
:
i32
)
->
c64
:
return
c64
(
x
)
+
c64
(
y
)
*
1j
@
interface
def
divmod
(
x
:
i32
,
y
:
i32
)
->
tuple
[
i32
,
i32
]:
"""
Return the tuple (x//y, x%y).
"""
if
y
==
0
:
raise
ZeroDivisionError
(
"Integer division or modulo by zero not possible"
)
t
:
tuple
[
i32
,
i32
]
t
=
(
_lpython_floordiv
(
x
,
y
),
_mod
(
x
,
y
))
return
t
def
lbound
(
x
:
i32
[:],
dim
:
i32
)
->
i32
:
pass
def
ubound
(
x
:
i32
[:],
dim
:
i32
)
->
i32
:
pass
@
ccall
def
_lfortran_caimag
(
x
:
c32
)
->
f32
:
pass
@
ccall
def
_lfortran_zaimag
(
x
:
c64
)
->
f64
:
pass
@
overload
def
_lpython_imag
(
x
:
c64
)
->
f64
:
return
_lfortran_zaimag
(
x
)
@
overload
def
_lpython_imag
(
x
:
c32
)
->
f32
:
return
_lfortran_caimag
(
x
)
@
overload
def
_lpython_floordiv
(
a
:
f64
,
b
:
f64
)
->
f64
:
r
:
f64
r
=
a
/
b
result
:
i64
result
=
int
(
r
)
if
r
>=
0.0
or
f64
(
result
)
==
r
:
return
float
(
result
)
return
float
(
result
-
i64
(
1
))
@
overload
def
_lpython_floordiv
(
a
:
f32
,
b
:
f32
)
->
f32
:
r
:
f64
r
=
float
(
a
)
/
float
(
b
)
result
:
i32
resultf32
:
f32
result
=
i32
(
r
)
if
r
>=
0.0
or
f64
(
result
)
==
r
:
resultf32
=
f32
(
1.0
)
*
f32
(
result
)
else
:
resultf32
=
f32
(
1.0
)
*
f32
(
result
)
-
f32
(
1.0
)
return
resultf32
@
overload
def
_lpython_floordiv
(
a
:
i32
,
b
:
i32
)
->
i32
:
r
:
f64
# f32 rounds things up and gives incorrect results
r
=
float
(
a
)
/
float
(
b
)
result
:
i32
result
=
i32
(
r
)
if
r
>=
0.0
or
f64
(
result
)
==
r
:
return
result
return
result
-
1
@
overload
def
_lpython_floordiv
(
a
:
i64
,
b
:
i64
)
->
i64
:
r
:
f64
r
=
a
/
b
result
:
i64
result
=
int
(
r
)
if
r
>=
0.0
or
f64
(
result
)
==
r
:
return
result
return
result
-
i64
(
1
)
@
overload
def
_lpython_floordiv
(
a
:
bool
,
b
:
bool
)
->
bool
:
if
b
==
False
:
raise
ValueError
(
'Denominator cannot be False or 0.'
)
return
a
@
overload
def
_mod
(
a
:
i32
,
b
:
i32
)
->
i32
:
return
a
-
_lpython_floordiv
(
a
,
b
)
*
b
@
overload
def
_mod
(
a
:
f32
,
b
:
f32
)
->
f32
:
return
a
-
_lpython_floordiv
(
a
,
b
)
*
b
@
overload
def
_mod
(
a
:
i64
,
b
:
i64
)
->
i64
:
return
a
-
_lpython_floordiv
(
a
,
b
)
*
b
@
overload
def
_mod
(
a
:
f64
,
b
:
f64
)
->
f64
:
return
a
-
_lpython_floordiv
(
a
,
b
)
*
b
@
overload
def
max
(
a
:
i32
,
b
:
i32
)
->
i32
:
if
a
>
b
:
return
a
else
:
return
b
@
overload
def
max
(
a
:
i32
,
b
:
i32
,
c
:
i32
)
->
i32
:
res
:
i32
=
a
if
b
>
res
:
res
=
b
if
c
>
res
:
res
=
c
return
res
@
overload
def
max
(
a
:
f64
,
b
:
f64
,
c
:
f64
)
->
f64
:
res
:
f64
=
a
if
b
-
res
>
1e-6
:
res
=
b
if
c
-
res
>
1e-6
:
res
=
c
return
res
@
overload
def
max
(
a
:
f64
,
b
:
f64
)
->
f64
:
if
a
-
b
>
1e-6
:
return
a
else
:
return
b
@
overload
def
min
(
a
:
i32
,
b
:
i32
)
->
i32
:
if
a
<
b
:
return
a
else
:
return
b
@
overload
def
min
(
a
:
i32
,
b
:
i32
,
c
:
i32
)
->
i32
:
res
:
i32
=
a
if
b
<
res
:
res
=
b
if
c
<
res
:
res
=
c
return
res
@
overload
def
min
(
a
:
f64
,
b
:
f64
,
c
:
f64
)
->
f64
:
res
:
f64
=
a
if
res
-
b
>
1e-6
:
res
=
b
if
res
-
c
>
1e-6
:
res
=
c
return
res
@
overload
def
min
(
a
:
f64
,
b
:
f64
)
->
f64
:
if
b
-
a
>
1e-6
:
return
a
else
:
return
b
@
overload
def
_floor
(
x
:
f64
)
->
i64
:
r
:
i64
r
=
int
(
x
)
if
x
>=
f64
(
0
)
or
x
==
f64
(
r
):
return
r
return
r
-
i64
(
1
)
@
overload
def
_floor
(
x
:
f32
)
->
i32
:
r
:
i32
r
=
i32
(
x
)
if
x
>=
f32
(
0
)
or
x
==
f32
(
r
):
return
r
return
r
-
1
@
overload
def
_mod
(
a
:
i32
,
b
:
i32
)
->
i32
:
"""
Returns a%b
"""
return
a
-
i32
(
_floor
(
a
/
b
))
*
b
@
overload
def
_mod
(
a
:
i64
,
b
:
i64
)
->
i64
:
"""
Returns a%b
"""
r
:
i64
r
=
_floor
(
a
/
b
)
return
a
-
r
*
b
@
overload
def
pow
(
x
:
i32
,
y
:
i32
,
z
:
i32
)
->
i32
:
"""
Return `x` raised to the power `y`.
"""
if
y
<
0
:
raise
ValueError
(
'y should be nonnegative'
)
result
:
i32
result
=
_mod
(
x
**
y
,
z
)
return
result
@
overload
def
pow
(
x
:
i64
,
y
:
i64
,
z
:
i64
)
->
i64
:
"""
Return `x` raised to the power `y`.
"""
if
y
<
i64
(
0
):
raise
ValueError
(
'y should be nonnegative'
)
result
:
i64
result
=
_mod
(
x
**
y
,
z
)
return
result
@
overload
def
_lpython_str_capitalize
(
x
:
str
)
->
str
:
if
len
(
x
)
==
0
:
return
x
val
:
i32
val
=
ord
(
x
[
0
])
if
val
>=
ord
(
'a'
)
and
val
<=
ord
(
'x'
):
val
-=
32
x
=
chr
(
val
)
+
x
[
1
:]
return
x
@
overload
def
_lpython_str_lower
(
x
:
str
)
->
str
:
res
:
str
res
=
""
i
:
str
for
i
in
x
:
if
ord
(
'A'
)
<=
ord
(
i
)
and
ord
(
'Z'
)
>=
ord
(
i
):
res
+=
chr
(
ord
(
i
)
+
32
)
else
:
res
+=
i
return
res
@
overload
def
_lpython_str_find
(
s
:
str
,
sub
:
str
)
->
i32
:
s_len
:
i32
;
sub_len
:
i32
;
flag
:
bool
;
_len
:
i32
;
res
:
i32
;
i
:
i32
;
lps
:
list
[
i32
]
=
[]
s_len
=
len
(
s
)
sub_len
=
len
(
sub
)
flag
=
False
res
=
-
1
if
s_len
==
0
or
sub_len
==
0
:
return
0
if
sub_len
==
0
or
(
sub_len
==
s_len
)
else
-
1
for
i
in
range
(
sub_len
):
lps
.
append
(
0
)
i
=
1
_len
=
0
while
i
<
sub_len
:
if
sub
[
i
]
==
sub
[
_len
]:
_len
+=
1
lps
[
i
]
=
_len
i
+=
1
else
:
if
_len
!=
0
:
_len
=
lps
[
_len
-
1
]
else
:
lps
[
i
]
=
0
i
+=
1
j
:
i32
j
=
0
i
=
0
while
(
s_len
-
i
)
>=
(
sub_len
-
j
)
and
not
flag
:
if
sub
[
j
]
==
s
[
i
]:
i
+=
1
j
+=
1
if
j
==
sub_len
:
res
=
i
-
j
flag
=
True
j
=
lps
[
j
-
1
]
elif
i
<
s_len
and
sub
[
j
]
!=
s
[
i
]:
if
j
!=
0
:
j
=
lps
[
j
-
1
]
else
:
i
=
i
+
1
return
res
def
_lpython_str_rstrip
(
x
:
str
)
->
str
:
ind
:
i32
ind
=
len
(
x
)
-
1
while
ind
>=
0
and
x
[
ind
]
==
' '
:
ind
-=
1
return
x
[
0
:
ind
+
1
]
@
overload
def
_lpython_str_lstrip
(
x
:
str
)
->
str
:
ind
:
i32
ind
=
0
while
ind
<
len
(
x
)
and
x
[
ind
]
==
' '
:
ind
+=
1
return
x
[
ind
:
len
(
x
)]
@
overload
def
_lpython_str_strip
(
x
:
str
)
->
str
:
res
:
str
res
=
_lpython_str_lstrip
(
x
)
res
=
_lpython_str_rstrip
(
res
)
return
res
@
overload
def
_lpython_str_swapcase
(
s
:
str
)
->
str
:
res
:
str
=
""
cur
:
str
for
cur
in
s
:
if
ord
(
cur
)
>=
ord
(
'a'
)
and
ord
(
cur
)
<=
ord
(
'z'
):
res
+=
chr
(
ord
(
cur
)
-
ord
(
'a'
)
+
ord
(
'A'
))
elif
ord
(
cur
)
>=
ord
(
'A'
)
and
ord
(
cur
)
<=
ord
(
'Z'
):
res
+=
chr
(
ord
(
cur
)
-
ord
(
'A'
)
+
ord
(
'a'
))
else
:
res
+=
cur
return
res
@
overload
def
_lpython_str_startswith
(
s
:
str
,
sub
:
str
)
->
bool
:
res
:
bool
res
=
not
(
len
(
s
)
==
0
and
len
(
sub
)
>
0
)
i
:
i32
;
j
:
i32
i
=
0
;
j
=
0
while
(
i
<
len
(
s
))
and
((
j
<
len
(
sub
))
and
res
):
res
=
res
and
(
s
[
i
]
==
sub
[
j
])
i
+=
1
;
j
+=
1
if
res
:
res
=
res
and
(
j
==
len
(
sub
))
return
res
def
list
(
s
:
str
)
->
list
[
str
]:
l
:
list
[
str
]
=
[]
i
:
i32
if
len
(
s
)
==
0
:
return
l
for
i
in
range
(
len
(
s
)):
l
.
append
(
s
[
i
])
return
l
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