utils/math.h file

Functions

static auto math_fast_log2(float val) -> CONST float

Fast log calculation to be used where precision is not required (like log curves).

static auto math_get_fader_val_from_amp(sample_t amp) -> CONST sample_t

Returns fader value 0.0 to 1.0 from amp value 0.0 to 2.0 (+6 dbFS).

static auto math_get_amp_val_from_fader(sample_t fader) -> CONST sample_t

Returns amp value 0.0 to 2.0 (+6 dbFS) from fader value 0.0 to 1.0.

static auto math_amp_to_dbfs(sample_t amp) -> CONST sample_t

Convert from amplitude 0.0 to 2.0 to dbFS.

auto math_calculate_max_amp(sample_t* buf, const nframes_t nframes) -> sample_t

Gets the digital peak of the given signal as amplitude (0-2).

auto math_calculate_rms_db(sample_t* buf, const nframes_t nframes) -> sample_t

Calculate db using RMS method.

static auto math_dbfs_to_amp(sample_t dbfs) -> CONST sample_t

Convert form dbFS to amplitude 0.0 to 2.0.

static auto math_dbfs_to_fader_val(sample_t dbfs) -> CONST sample_t

Convert form dbFS to fader val 0.0 to 1.0.

auto math_assert_nonnann(float x) -> bool

Asserts that the value is non-nan.

Defines

#define MATH_RMS_FRAMES

Frames to skip when calculating the RMS.

#define MATH_TINY_NUMBER

Tiny number to be used for denormaml prevention (-140dB).

#define math_floats_equal_epsilon(a, b, e)

Checks if 2 doubles are equal.

#define math_floats_equal(a, b)

Checks if 2 doubles are equal.

#define math_round_double_to_type(x, type)

Rounds a double to an int.

#define math_round_double_to_int(x)

Rounds a double to an int.

#define math_round_double_to_size_t(x)

Rounds a double to a size_t.

#define math_round_double_to_long(x)

Rounds a double to a long.

#define math_round_float_to_type(x, type)

Rounds a float to a given type.

#define math_round_float_to_int(x)

Rounds a float to an int.

#define math_round_float_to_long(x)

Rounds a float to a long.

Define documentation