Python counterparts for C math functions
Python has direct counterparts to most of the functions in C's standard math library.The Python functions have the same name as their C counterparts with three exceptions:
fabsin C corrresponds toabsin Pythontgammain C correspons togammain Pythonlgammain C corresponds togammalnin Python
The function abs is at the top level of Python. Aside from this exception,
all mathematical functions are found in math, scipy, or scipy.speci.
All functions in math have counterparts in scipy with the same name.
However, the scipy version may behave differently. For example, math.sqrt(-1)
returns a domain error but scipy.sqrt(-1) returns 1j.
Python (specifically SciPy) has far more functions than C. The following
chart lists Python counterparts for C functions in math.h.
| Function | Python counterpart |
|---|---|
| acos | math.acos |
| acosh | math.acosh |
| asin | math.asin |
| asinh | math.asinh |
| atan | math.atan |
| atan2 | math.atan2 |
| atanh | math.atanh |
| ceil | math.ceil |
| copysign | math.copysign |
| cos | math.cos |
| cosh | math.cosh |
| erf | scipy.special.erf |
| erfc | scipy.special.erfc |
| exp | math.exp |
| exp2 | scipy.exp2 |
| expm1 | scipy.special.expm1 |
| fabs | abs |
| fmax | scipy.fmax |
| fmin | scipy.fmin |
| fmod | scipy.fmod |
| hypot | scipy.hypot |
| isfinite | ! scipy.lisinf |
| isinf | scipy.isinf |
| isnan | scipy.isnan |
| j0 | scipy.special.j0 |
| j1 | scipy.special.j1 |
| jn | scipy.special.jn |
| ldexp | math.ldexp |
| lgamma | scipy.special.gammaln |
| log | math.log |
| log10 | math.log10 |
| log1p | math.log1p |
| log2 | scipy.log2 |
| nan | scipy.nan |
| pow | math.pow |
| remainder | scipy.remainder |
| sin | math.sin |
| sinh | math.sinh |
| sqrt | math.sqrt |
| tan | math.tan |
| tanh | math.tanh |
| tgamma | scipy.special.gamma |
| y0 | scipy.special.y0 |
| y1 | scipy.special.y1 |
| yn | scipy.special.yn |
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