# lv_vg_lite_math.h (/api/draw/vg_lite/lv_vg_lite_math_h)
Functions [#functions]
math_zero [#math_zero]
```c title=" " lineNumbers=1
static bool math_zero(float a)
```
Parameters
| Name | Type |
| ---- | ------- |
| `a` | `float` |
math_equal [#math_equal]
```c title=" " lineNumbers=1
static bool math_equal(float a, float b)
```
Parameters
| Name | Type |
| ---- | ------- |
| `a` | `float` |
| `b` | `float` |
math_fast_inv_sqrtf [#math_fast_inv_sqrtf]
```c title=" " lineNumbers=1
float math_fast_inv_sqrtf(float number)
```
Parameters
| Name | Type |
| -------- | ------- |
| `number` | `float` |
Macros [#macros]
MATH_PI [#math_pi]
```c title=" " lineNumbers=1
#define MATH_PI 3.14159265358979323846f
```
MATH_HALF_PI [#math_half_pi]
```c title=" " lineNumbers=1
#define MATH_HALF_PI 1.57079632679489661923f
```
MATH_TWO_PI [#math_two_pi]
```c title=" " lineNumbers=1
#define MATH_TWO_PI 6.28318530717958647692f
```
DEG_TO_RAD [#deg_to_rad]
```c title=" " lineNumbers=1
#define DEG_TO_RAD 0.017453292519943295769236907684886f
```
RAD_TO_DEG [#rad_to_deg]
```c title=" " lineNumbers=1
#define RAD_TO_DEG 57.295779513082320876798154814105f
```
MATH_TANF [#math_tanf]
```c title=" " lineNumbers=1
#define MATH_TANF(x) \
tanf(x)
```
MATH_SINF [#math_sinf]
```c title=" " lineNumbers=1
#define MATH_SINF(x) \
sinf(x)
```
MATH_COSF [#math_cosf]
```c title=" " lineNumbers=1
#define MATH_COSF(x) \
cosf(x)
```
MATH_ASINF [#math_asinf]
```c title=" " lineNumbers=1
#define MATH_ASINF(x) \
asinf(x)
```
MATH_ACOSF [#math_acosf]
```c title=" " lineNumbers=1
#define MATH_ACOSF(x) \
acosf(x)
```
MATH_FABSF [#math_fabsf]
```c title=" " lineNumbers=1
#define MATH_FABSF(x) \
fabsf(x)
```
MATH_SQRTF [#math_sqrtf]
```c title=" " lineNumbers=1
#define MATH_SQRTF(x) \
sqrtf(x)
```
MATH_RADIANS [#math_radians]
```c title=" " lineNumbers=1
#define MATH_RADIANS(deg) \
((deg) * DEG_TO_RAD)
```
MATH_DEGREES [#math_degrees]
```c title=" " lineNumbers=1
#define MATH_DEGREES(rad) \
((rad) * RAD_TO_DEG)
```
Dependencies [#dependencies]