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Macros | |
| #define | M_LOG210 3.32192809488736 |
Functions | |
| uint32_t | arm_rand32 () |
| Generate an unsigned 32bit pseudo-random number using xorshifter algorithm. More... | |
| float | arm_sqrtf (float in) |
| void | arm_srand32 (uint32_t s) |
| float | fast_atan2f (float y, float x) |
| float | fast_exp10f (float x) |
| float | fast_exp2f (float x) |
| float | fast_expf (float x) |
| float | fast_fmodf (float x, float y) |
| float | fast_log10f (float x) |
| float | fast_log2f (float x) |
| uint32_t | fast_log2i (uint32_t x) |
| void | fast_log_set_table (const float *table, int size) |
| float | fast_logf (float x) |
| void | fast_pow_set_table (const uint32_t *table, int size) |
| float | fast_powf (float x, float y) |
| float | randf () |
| generate a random number between 0 and 1 More... | |
Variables | |
| static uint32_t | log_precision |
| static const float * | log_table |
| static uint32_t | pow_precision |
| static const uint32_t * | pow_table |
| static uint32_t | r32seed = 33641 |
Macro Definition Documentation
◆ M_LOG210
| #define M_LOG210 3.32192809488736 |
Definition at line 119 of file basicmaths.c.
Function Documentation
◆ arm_rand32()
| uint32_t arm_rand32 | ( | ) |
Generate an unsigned 32bit pseudo-random number using xorshifter algorithm.
Aka xorshifter32. "Anyone who considers arithmetical methods of producing random digits is, of course, in a state of sin." – John von Neumann.
Definition at line 67 of file basicmaths.c.
References r32seed.
Referenced by WhiteNoiseGenerator::generate(), and randf().
◆ arm_sqrtf()
| float arm_sqrtf | ( | float | in | ) |
Definition at line 78 of file basicmaths.c.
◆ arm_srand32()
| void arm_srand32 | ( | uint32_t | s | ) |
Definition at line 58 of file basicmaths.c.
References r32seed.
◆ fast_atan2f()
| float fast_atan2f | ( | float | y, |
| float | x | ||
| ) |
Definition at line 91 of file basicmaths.c.
References M_PI.
◆ fast_exp10f()
| float fast_exp10f | ( | float | x | ) |
Definition at line 133 of file basicmaths.c.
References M_LOG210, pow_precision, pow_table, and powFastLookup().
◆ fast_exp2f()
| float fast_exp2f | ( | float | x | ) |
Definition at line 129 of file basicmaths.c.
References pow_precision, pow_table, and powFastLookup().
◆ fast_expf()
| float fast_expf | ( | float | x | ) |
Definition at line 125 of file basicmaths.c.
References pow_precision, pow_table, and powFastLookup().
◆ fast_fmodf()
| float fast_fmodf | ( | float | x, |
| float | y | ||
| ) |
Definition at line 161 of file basicmaths.c.
◆ fast_log10f()
| float fast_log10f | ( | float | x | ) |
Definition at line 141 of file basicmaths.c.
References icsi_log(), log_precision, and log_table.
◆ fast_log2f()
| float fast_log2f | ( | float | x | ) |
Definition at line 146 of file basicmaths.c.
References icsi_log(), log_precision, and log_table.
◆ fast_log2i()
| uint32_t fast_log2i | ( | uint32_t | x | ) |
Definition at line 166 of file basicmaths.c.
Referenced by fast_log_set_table(), and fast_pow_set_table().
◆ fast_log_set_table()
| void fast_log_set_table | ( | const float * | table, |
| int | size | ||
| ) |
Definition at line 156 of file basicmaths.c.
References fast_log2i(), log_precision, and log_table.
◆ fast_logf()
| float fast_logf | ( | float | x | ) |
Definition at line 137 of file basicmaths.c.
References icsi_log(), log_precision, and log_table.
◆ fast_pow_set_table()
| void fast_pow_set_table | ( | const uint32_t * | table, |
| int | size | ||
| ) |
Definition at line 151 of file basicmaths.c.
References fast_log2i(), pow_precision, and pow_table.
◆ fast_powf()
| float fast_powf | ( | float | x, |
| float | y | ||
| ) |
Definition at line 121 of file basicmaths.c.
References pow_precision, pow_table, and powFastLookup().
◆ randf()
| float randf | ( | ) |
generate a random number between 0 and 1
Definition at line 74 of file basicmaths.c.
References arm_rand32().
Referenced by WhiteNoiseGenerator::generate(), GaussianNoiseGenerator::generate(), NoiseOscillator::generate(), FloatArray::noise(), and NoiseOscillator::reset().
Variable Documentation
◆ log_precision
|
static |
Definition at line 115 of file basicmaths.c.
Referenced by fast_log10f(), fast_log2f(), fast_log_set_table(), and fast_logf().
◆ log_table
|
static |
Definition at line 114 of file basicmaths.c.
Referenced by fast_log10f(), fast_log2f(), fast_log_set_table(), and fast_logf().
◆ pow_precision
|
static |
Definition at line 117 of file basicmaths.c.
Referenced by fast_exp10f(), fast_exp2f(), fast_expf(), fast_pow_set_table(), and fast_powf().
◆ pow_table
|
static |
Definition at line 116 of file basicmaths.c.
Referenced by fast_exp10f(), fast_exp2f(), fast_expf(), fast_pow_set_table(), and fast_powf().
◆ r32seed
|
static |
Definition at line 56 of file basicmaths.c.
Referenced by arm_rand32(), and arm_srand32().
