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.

Macros
#define	atanf(x)   ((float)atan(x))
#define	atan2f(y, x)   ((float)atan2(y, x))
#define	powf(x, y)   ((float)pow(x, y))
#define	cosf(x)   ((float)cos(x))
#define	expf(x)   ((float)exp(x))
#define	exp2(x)   exp((x) * 0.693147180559945)
#define	exp2f(x)   ((float)exp2(x))
#define	ldexpf(x, exp)   ((float)ldexp(x, exp))
#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))
#define	log10f(x)   ((float)log10(x))
#define	sinf(x)   ((float)sin(x))

Functions
static av_always_inline double	cbrt (double x)
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.

Macro Definition Documentation

#define atanf

(

x

)

((float)atan(x))

Definition at line 38 of file libm.h.

Referenced by calc_bark(), and ps_tableinit().

#define atan2f	(		y,
			x
	)		((float)atan2(y, x))

Definition at line 43 of file libm.h.

Referenced by compute_sat_hue_metrics(), and ps_tableinit().

#define powf	(		x,
			y
	)		((float)pow(x, y))

Definition at line 48 of file libm.h.

Referenced by ac3_parse_header(), ac3_tables_init(), calc_input_response(), cbrtf(), decode_block(), decode_init(), decode_ppc(), ff_atrac_init_gain_compensation(), imc_decode_level_coefficients_raw(), and make_bands().

#define cosf

(

x

)

((float)cos(x))

Definition at line 67 of file libm.h.

Referenced by config_input(), lsf2lsp(), and ps_tableinit().

#define expf

(

x

)

((float)exp(x))

Definition at line 72 of file libm.h.

Referenced by decode_init(), plot_cqt(), and synth_block_fcb_acb().

#define exp2

(

x

)

exp((x) * 0.693147180559945)

Definition at line 77 of file libm.h.

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

#define exp2f

(

x

)

((float)exp2(x))

Definition at line 82 of file libm.h.

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

#define ldexpf	(		x,
			exp
	)		((float)ldexp(x, exp))

Definition at line 107 of file libm.h.

Referenced by ff_dca_xll_decode_audio(), and get_float().

#define llrint

(

x

)

((long long)rint(x))

Definition at line 112 of file libm.h.

Referenced by av_audio_convert(), avutil_version(), build_filter(), ff_audio_mix_set_matrix(), ff_rfps_add_frame(), set(), update_stat(), and write_number().

#define llrintf

(

x

)

((long long)rint(x))

Definition at line 117 of file libm.h.

Referenced by av_audio_convert().

#define log2

(

x

)

(log(x) * 1.44269504088896340736)

Definition at line 122 of file libm.h.

Referenced by config_output(), decode_ppc(), draw_mandelbrot(), filter_frame(), find_best_state(), midi(), print_report(), qscale2qlog(), and value_string().

#define log2f

(

x

)

((float)log2(x))

Definition at line 127 of file libm.h.

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

#define log10f

(

x

)

((float)log10(x))

Definition at line 132 of file libm.h.

Referenced by ff_amr_set_fixed_gain(), and ff_sipr_decode_frame_16k().

#define sinf

(

x

)

((float)sin(x))

Definition at line 137 of file libm.h.

Referenced by config_input(), ff_sine_window_init(), frand(), and ps_tableinit().

Function Documentation

static av_always_inline double cbrt ( double  x )

static

Definition at line 52 of file libm.h.

Referenced by fade_gain(), plot_freq(), and plot_spectrum_column().

static av_always_inline float cbrtf ( float  x )

static

Definition at line 59 of file libm.h.

Referenced by decode_spectrum_and_dequant(), plot_cqt(), and quantize_and_encode_band_cost_template().

static av_always_inline av_const int isinf ( float  x )

static

Definition at line 86 of file libm.h.

Referenced by eval_expr(), and get_exponent_dynamic().

static av_always_inline av_const int isnan ( float  x )

static

Definition at line 96 of file libm.h.

Referenced by aac_encode_frame(), audio_decode_frame(), av_d2q(), av_expr_parse_and_eval(), compute_target_delay(), config_input(), config_output(), config_props(), double2int64str(), eval_expr(), event_loop(), filter_frame(), func_pts(), get_qscale(), get_video_frame(), isnan_vec(), matroska_parse_tracks(), mov_read_tkhd(), normalize_double(), normalize_xy(), sdl_audio_callback(), select_frame(), set_volume(), sync_clock_to_slave(), synchronize_audio(), thp_probe(), update_alpha(), update_context(), video_refresh(), and vp_duration().

static double rint ( double  x )

inlinestatic

Definition at line 141 of file libm.h.

Referenced by calculate_display_rect(), compute_sin_and_cos(), idct248_ref(), lrint(), lrintf(), plot_spectrum_column(), qscale2qlog(), rgtc2_block_internal(), run_postproc(), and swri_noise_shaping_TMPL().

static av_always_inline av_const long int lrint ( double  x )

static

Definition at line 148 of file libm.h.

Referenced by av_audio_convert(), calc_input_response(), do_video_out(), encode_block(), ff_audio_mix_set_matrix(), fill_xyztables(), filter_frame(), mov_write_gama_tag(), precalc_coefs(), and set().

static av_always_inline av_const long int lrintf ( float  x )

static

Definition at line 155 of file libm.h.

static av_always_inline av_const double round ( double  x )

static

Definition at line 162 of file libm.h.

Referenced by apply_dependent_coupling_fixed(), apply_independent_coupling_fixed(), autocorr_calc(), config_output(), dequant(), encode_init(), ff_merge_channel_layouts(), fill_from_cache(), filter_frame(), frame_size(), func_pts(), get_rotation(), hevc_idct_32x32_msa(), hls_window(), init(), mov_write_sidx_tags(), noise_scale(), normalize_double(), ps_tableinit(), sbr_hf_apply_noise(), sbr_hf_assemble(), sbr_hf_inverse_filter(), sbr_sum_square_c(), scale_coefs(), subband_scale(), vector_fmul_window_scaled_c(), and vpx_init().

static av_always_inline av_const float roundf ( float  x )

static

Definition at line 169 of file libm.h.

Referenced by xvid_correct_framerate().

static av_always_inline av_const double trunc ( double  x )

static

Definition at line 176 of file libm.h.

Referenced by eval_expr().

static av_always_inline av_const float truncf ( float  x )

static

Definition at line 183 of file libm.h.

Referenced by amrnb_decode_frame(), and amrwb_decode_frame().