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Merged
gunthercox merged 1 commit into from
Oct 9, 2025
Merged

Add support for logarithms #41

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40 changes: 27 additions & 13 deletions mathparse/mathwords.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,8 @@
'DUT': {
'prefix_unary_operators': {
'vierkantswortel van': 'sqrt',
'wortel van': 'sqrt'
'wortel van': 'sqrt',
'logaritme van': 'log'
},
'postfix_unary_operators': {
'kwadraat': '^ 2'
Expand Down Expand Up @@ -66,7 +67,9 @@
'ENG': {
'prefix_unary_operators': {
'square root of': 'sqrt',
'negative': 'neg'
'negative': 'neg',
'logarithm of': 'log',
'log of': 'log'
},
'postfix_unary_operators': {
'squared': '^ 2',
Expand Down Expand Up @@ -120,7 +123,8 @@
},
'FRE': {
'prefix_unary_operators': {
'racine carrée de': 'sqrt'
'racine carrée de': 'sqrt',
'logarithme de': 'log'
},
'postfix_unary_operators': {
'au carré': '^ 2',
Expand Down Expand Up @@ -180,7 +184,8 @@
'GER': {
'prefix_unary_operators': {
'Quadratwurzel von': 'sqrt',
'Wurzel von': 'sqrt'
'Wurzel von': 'sqrt',
'Logarithmus von': 'log'
},
'postfix_unary_operators': {
'quadriert': '^ 2',
Expand Down Expand Up @@ -239,7 +244,8 @@
},
'GRE': {
'prefix_unary_operators': {
'τετραγωνική ρίζα του': 'sqrt'
'τετραγωνική ρίζα του': 'sqrt',
'λογάριθμος του': 'log'
},
'postfix_unary_operators': {
'στο τετράγωνο': '^ 2',
Expand Down Expand Up @@ -295,7 +301,8 @@
},
'ITA': {
'prefix_unary_operators': {
'radice quadrata di': 'sqrt'
'radice quadrata di': 'sqrt',
'logaritmo di': 'log'
},
'postfix_unary_operators': {
'al quadrato': '^ 2',
Expand Down Expand Up @@ -350,7 +357,8 @@
},
'MAR': {
'prefix_unary_operators': {
'वर्गमूल': 'sqrt'
'वर्गमूल': 'sqrt',
'लॉगरिथम': 'log'
},
'postfix_unary_operators': {
'वर्ग': '^ 2',
Expand Down Expand Up @@ -407,7 +415,8 @@
'RUS': {
'prefix_unary_operators': {
'квадратный корень из': 'sqrt',
'корень из': 'sqrt'
'корень из': 'sqrt',
'логарифм': 'log'
},
'postfix_unary_operators': {
'в квадрате': '^ 2',
Expand Down Expand Up @@ -469,7 +478,8 @@
},
'POR': {
'prefix_unary_operators': {
'raiz quadrada de': 'sqrt'
'raiz quadrada de': 'sqrt',
'logaritmo de': 'log'
},
'postfix_unary_operators': {
'ao quadrado': '^ 2',
Expand Down Expand Up @@ -524,7 +534,8 @@
'UKR': {
'prefix_unary_operators': {
'квадратний корінь з': 'sqrt',
'корінь з': 'sqrt'
'корінь з': 'sqrt',
'логарифм': 'log'
},
'postfix_unary_operators': {
'у квадраті': '^ 2',
Expand Down Expand Up @@ -586,7 +597,8 @@
},
'ESP': {
'prefix_unary_operators': {
'raiz cuadrada de': 'sqrt'
'raiz cuadrada de': 'sqrt',
'logaritmo de': 'log'
},
'postfix_unary_operators': {
'al cuadrado': '^ 2',
Expand Down Expand Up @@ -641,7 +653,8 @@
},
'THA': {
'prefix_unary_operators': {
'สแควรูท': 'sqrt'
'สแควรูท': 'sqrt',
'ลอการิทึม': 'log'
},
'postfix_unary_operators': {
'ยกกำลังสอง': '^ 2',
Expand Down Expand Up @@ -698,7 +711,8 @@
'prefix_unary_operators': {
'平方根': 'sqrt',
'开方': 'sqrt',
'负': 'neg'
'负': 'neg',
'对数': 'log'
},
'postfix_unary_operators': {
'平方': '^ 2',
Expand Down
95 changes: 95 additions & 0 deletions tests/test_unary_operations.py
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Original file line number Diff line number Diff line change
Expand Up @@ -41,3 +41,98 @@ def test_negative_number(self):
result = mathparse.parse('-4 + 2')

self.assertEqual(result, -2)

def test_log_symbolic(self):
result = mathparse.parse('log 100')

self.assertEqual(result, 2.0)

def test_log_symbolic_with_parenthesis(self):
result = mathparse.parse('log(1000)')

self.assertEqual(result, 3.0)

def test_log_english(self):
result = mathparse.parse('logarithm of 100', language='ENG')

self.assertEqual(result, 2.0)

def test_log_of_english(self):
result = mathparse.parse('log of 1000', language='ENG')

self.assertEqual(result, 3.0)

def test_log_french(self):
result = mathparse.parse('logarithme de 100', language='FRE')

self.assertEqual(result, 2.0)

def test_log_german(self):
result = mathparse.parse('Logarithmus von 100', language='GER')

self.assertEqual(result, 2.0)

def test_log_spanish(self):
result = mathparse.parse('logaritmo de 100', language='ESP')

self.assertEqual(result, 2.0)

def test_log_italian(self):
result = mathparse.parse('logaritmo di 100', language='ITA')

self.assertEqual(result, 2.0)

def test_log_portuguese(self):
result = mathparse.parse('logaritmo de 100', language='POR')

self.assertEqual(result, 2.0)

def test_log_russian(self):
result = mathparse.parse('логарифм 100', language='RUS')

self.assertEqual(result, 2.0)

def test_log_ukrainian(self):
result = mathparse.parse('логарифм 100', language='UKR')

self.assertEqual(result, 2.0)

def test_log_dutch(self):
result = mathparse.parse('logaritme van 100', language='DUT')

self.assertEqual(result, 2.0)

def test_log_greek(self):
result = mathparse.parse('λογάριθμος του 100', language='GRE')

self.assertEqual(result, 2.0)

def test_log_thai(self):
result = mathparse.parse('ลอการิทึม 100', language='THA')

self.assertEqual(result, 2.0)

def test_log_chinese(self):
result = mathparse.parse('对数 100', language='CHI')

self.assertEqual(result, 2.0)

def test_log_marathi(self):
result = mathparse.parse('लॉगरिथम 100', language='MAR')

self.assertEqual(result, 2.0)

def test_log_in_expression(self):
result = mathparse.parse('log 100 * 2')

self.assertEqual(result, 4.0)

def test_log_with_addition(self):
result = mathparse.parse('log 100 + log 1000')

self.assertEqual(result, 5.0)

def test_log_with_power(self):
result = mathparse.parse('(log 100) ^ 2')

self.assertEqual(result, 4.0)