libavutil/libm.h File Reference

Replacements for frequently missing libm functions. More...

#include <math.h>
#include "config.h"
#include "attributes.h"
#include "intfloat.h"

Go to the source code of this file.

Defines
#define	exp2(x)   exp((x) * 0.693147180559945)
#define	exp2f(x)   ((float)exp2(x))
#define	llrint(x)   ((long long)rint(x))
#define	llrintf(x)   ((long long)rint(x))
#define	log2(x)   (log(x) * 1.44269504088896340736)
#define	log2f(x)   ((float)log2(x))
Functions
static av_always_inline float	cbrtf (float x)
static av_always_inline av_const int	isinf (float x)
static av_always_inline av_const int	isnan (float x)
static double	rint (double x)
static av_always_inline av_const long int	lrint (double x)
static av_always_inline av_const long int	lrintf (float x)
static av_always_inline av_const double	round (double x)
static av_always_inline av_const float	roundf (float x)
static av_always_inline av_const double	trunc (double x)
static av_always_inline av_const float	truncf (float x)

---

Detailed Description

Replacements for frequently missing libm functions.

Definition in file libm.h.

---

Define Documentation

#define exp2

(

x

)

exp((x) * 0.693147180559945)

Definition at line 45 of file libm.h.

Referenced by decode_init_static(), imc_decode_level_coefficients(), MPA_encode_init(), psy_3gpp_init(), and value_string().

#define exp2f

(

x

)

((float)exp2(x))

Definition at line 50 of file libm.h.

Referenced by atrac3_decode_init(), calc_reduction_3gpp(), ff_amr_set_fixed_gain(), and sbr_dequant().

#define llrint

(

x

)

((long long)rint(x))

Definition at line 75 of file libm.h.

Referenced by av_audio_convert(), avresample_set_matrix(), mpegaudio_tableinit(), and write_number().

#define llrintf

(

x

)

((long long)rint(x))

Definition at line 80 of file libm.h.

Referenced by av_audio_convert().

#define log2

(

x

)

(log(x) * 1.44269504088896340736)

Definition at line 85 of file libm.h.

Referenced by draw_mandelbrot(), find_best_state(), print_report(), qscale2qlog(), and value_string().

#define log2f

(

x

)

((float)log2(x))

Definition at line 90 of file libm.h.

Referenced by bit_allocation(), calc_pe_3gpp(), coef2maxsf(), coef2minsf(), imc_decode_level_coefficients(), sbr_make_f_derived(), sbr_make_f_master(), search_for_quantizers_anmr(), search_for_quantizers_faac(), search_for_quantizers_fast(), and search_for_quantizers_twoloop().

---

Function Documentation

static av_always_inline float cbrtf

(

float

x

)

[static]

Definition at line 37 of file libm.h.

Referenced by cbrt_tableinit(), decode_spectrum_and_dequant(), mpegaudio_tableinit(), and quantize_and_encode_band_cost_template().

static av_always_inline av_const int isinf

(

float

x

)

[static]

Definition at line 54 of file libm.h.

Referenced by av_d2q(), eval_expr(), and get_exponent_dynamic().

static av_always_inline av_const int isnan

(

float

x

)

[static]

Definition at line 64 of file libm.h.

Referenced by av_d2q(), av_expr_parse_and_eval(), config_props(), eval_expr(), filter_frame(), get_qscale(), init(), normalize_double(), and select_frame().

static av_always_inline av_const long int lrint

(

double

x

)

[static]

Definition at line 101 of file libm.h.

Referenced by av_audio_convert(), avresample_set_matrix(), calc_input_response(), do_video_out(), encode_block(), precalc_coefs(), printval(), and set().

static av_always_inline av_const long int lrintf

(

float

x

)

[static]

Definition at line 108 of file libm.h.

static double rint

(

double

x

)

[inline, static]

Definition at line 94 of file libm.h.

Referenced by calculate_display_rect(), compute_sin_and_cos(), idct248_ref(), lrint(), lrintf(), and qscale2qlog().

static av_always_inline av_const double round

(

double

x

)

[static]

Definition at line 115 of file libm.h.

Referenced by dequant(), fill_from_cache(), normalize_double(), and vp8_init().

static av_always_inline av_const float roundf

(

float

x

)

[static]

Definition at line 122 of file libm.h.

Referenced by xvid_correct_framerate().

static av_always_inline av_const double trunc

(

double

x

)

[static]

Definition at line 129 of file libm.h.

Referenced by eval_expr().

static av_always_inline av_const float truncf

(

float

x

)

[static]

Definition at line 136 of file libm.h.

Referenced by amrnb_decode_frame(), and amrwb_decode_frame().