C/C++ math formula viewer

Motivation

We can use useful mathematical functions in C/C++ by including math.h or cmath library. However, it is hard to recognize the full functionality of the function at a glance if the function call is deep and complex. The indirect function signature also reduces cognition. For example, it is hard to know the mathematical meaning of the following code:

log(sinf(atan2f(hypot(abs(a + b), abs(c)), d + f)).

This is inefficient!! It will be better to show the functionality with common math formula form:

Therefore, I implemented the plugin in which the users can directly see the following formula, driven by the overlapped math function.

Features

Hovering math formula

Quite intuitive. First, write the c or c++ code with the functions & constants from c math libraries. And if you point the math function with the mouse, the plugin parses the function and its arguments recursively and hovers the generated Unicode-style math formula.

Supporting cmath function

Absolute

abs labs llabs fabs fabsf fabsl cabs cabsf cabsl

Exponential

exp expf expl exp2 exp2f exp2l expm1 expm1f expm1l ldexp ldexpf ldexpl

Logarithm

log logf logl log2 log2f log2l log10 log10f log10l log1p log1pf log1pl

Nearest Integer

ceil ceilf ceill floor floorf floorl trunc truncf truncl round roundf roundl lround lroundf lroundl llround llroundf llroundl

Power

sqrt sqrtf sqrtl cbrt cbrtf cbrtl

Hypotenues

hypot hypotf hypotl

Trigonometric

sin sinf sinl cos cosf cosl tan tanf tanl asin asinf asinl acos acosf acosl atan atanf atanl sinh sinhf sinhl cosh coshf coshl tanh tanhf tanhl csinh csinhf csinhl ccosh ccoshf ccoshl ctanh ctanhf ctanhl asinh asinhf asinhl acosh acoshf acoshl atanh atanhf atanhl casinh casinhf casinhl cacosh cacoshf cacoshl catanh catanhf catanhl atan2 atan2f atan2l

Error

erf erff erfl erfc erfcf erfcl

Gamma

tgamma tgammaf tgammal lgamma lgammaf lgammal

Release Notes

1.0.0

Initial release of the plugin Hovers generated math formula when the user points certain math function

1.0.4

Real Ready for the release (cleanup code, add logo, eliminate unneccesary functionalities)

Future plan

• viewing latex style formula
• Support more language (java, python...)