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path: root/src/lib/eina/eina_fp.h
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 ```1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 ``` ``````/* EINA - EFL data type library * Copyright (C) 2007-2008 Jorge Luis Zapata Muga * Copyright (C) 2009 Cedric BAIL * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; * if not, see . */ #ifndef EINA_FP_H_ # define EINA_FP_H_ /** * @addtogroup Eina_Fp_Group Fp * * @brief Floating point numbers data type management. */ /** * @addtogroup Eina_Data_Types_Group Data Types * * @{ */ /** * @defgroup Eina_Fp_Group Fp * * @{ */ #include "eina_types.h" #ifdef _MSC_VER typedef unsigned __int64 uint64_t; typedef signed __int64 int64_t; typedef signed int int32_t; #else # include #endif /** * @def EINA_F32P32_PI * @brief Yields the 32-bit PI constant */ #define EINA_F32P32_PI 0x00000003243f6a89 /** * @typedef Eina_F32p32 * Type for floating point number where the size of the integer part is 32-bit * and the size of the decimal part is 32-bit */ typedef int64_t Eina_F32p32; /** * @typedef Eina_F16p16 * Type for floating point number where the size of the integer part is 16-bit * and the size of the decimal part is 16-bit */ typedef int32_t Eina_F16p16; /** * @typedef Eina_F8p24 * Type for floating point number where the size of the integer part is 8-bit * and the size of the decimal part is 24bits */ typedef int32_t Eina_F8p24; /** * @brief Creates a new Eina_F32p32 floating point number from standard 32-bit * integer * * @param v 32-bit integer value to convert * @return The value converted into Eina_F32p32 format */ static inline Eina_F32p32 eina_f32p32_int_from(int32_t v); /** * @brief Creates a new standard 32-bit integer from Eina_F32p32 floating point * number * * @param v Eina_F32p32 value to convert * @return The value converted into 32-bit integer */ static inline int32_t eina_f32p32_int_to(Eina_F32p32 v); /** * @brief Creates a new Eina_F32p32 floating point number from standard double * * @param v Double value to convert * @return The value converted into Eina_F32p32 format */ static inline Eina_F32p32 eina_f32p32_double_from(double v); /** * @brief Creates a new standard double from Eina_F32p32 floating point * number * * @param v Eina_F32p32 value to convert * @return The value converted into double */ static inline double eina_f32p32_double_to(Eina_F32p32 v); /** * @brief Calculates the sum of two Eina_F32p32 floating point numbers * * @param a The first number * @param b The second number * @return The sum result of the two numbers @p a + @p b */ static inline Eina_F32p32 eina_f32p32_add(Eina_F32p32 a, Eina_F32p32 b); /** * @brief Calculates the subtraction of two Eina_F32p32 floating point numbers * * @param a The first number * @param b The subtracted number * @return The subtraction result of the two numbers @p a - @p b */ static inline Eina_F32p32 eina_f32p32_sub(Eina_F32p32 a, Eina_F32p32 b); /** * @brief Calculates the multiplication of two Eina_F32p32 floating point numbers * * @param a The first number * @param b The second number * @return The multiplication result of the two numbers @p a * @p b * * To prevent overflow during multiplication we need to reduce the precision of * the fraction part Shift both values to only contain 16 bit of the fraction * part (rounded). After multiplication we again have a value with a 32-bit * fraction part. */ static inline Eina_F32p32 eina_f32p32_mul(Eina_F32p32 a, Eina_F32p32 b); /** * @brief Calculates the scale multiplication of one Eina_F32p32 floating point * number with an integer * * @param a The Eina_F32p32 number * @param b The integer value * @return The multiplication result of the two numbers @p a * @p b */ static inline Eina_F32p32 eina_f32p32_scale(Eina_F32p32 a, int b); /** * @brief Calculates the division of two Eina_F32p32 floating point numbers * * @param a The numerator number * @param b The denominator number * @return The division result of the two numbers @p a / @p b */ static inline Eina_F32p32 eina_f32p32_div(Eina_F32p32 a, Eina_F32p32 b); /** * @brief Calculates the square root of an Eina_F32p32 floating point number * * @param a The number to calculate the square root from * @return The square root result for the number @p a */ static inline Eina_F32p32 eina_f32p32_sqrt(Eina_F32p32 a); /** * @brief Gets the absolute value of the integer part of and Eina_F32p32 floating * point number * * @param v The floating point number * @return The positive integer part of the number @p v */ static inline unsigned int eina_f32p32_fracc_get(Eina_F32p32 v); /** * @brief Gets the absolute value of an Eina_F32p32 floating point number * * @param a The floating point number * @return The absolute value for the number @p a * @warning Has known issues on 64-bit architecture, prefer * eina_f32p32_fracc_get() instead */ #define eina_fp32p32_llabs(a) ((a < 0) ? -(a) : (a)) /** * @brief Calculates the cosinus of a floating point number * * @param a The angle in radians to calculate the cosinus from. * @return The cosinus value of the angle @p a */ EAPI Eina_F32p32 eina_f32p32_cos(Eina_F32p32 a); /** * @brief Calculates the sinus of a floating point number * * @param a The angle in radians to calculate the sinus from. * @return The cosinus value of the angle @p a */ EAPI Eina_F32p32 eina_f32p32_sin(Eina_F32p32 a); /** * @def EINA_F16P16_ONE * * Yields the maximum 16-bit unsigned integer size (= 65536) */ #define EINA_F16P16_ONE (1 << 16) /** * @def EINA_F16P16_HALF * * Yields the maximum 16-bit signed integer size (= 32768) */ #define EINA_F16P16_HALF (1 << 15) /** * @brief Creates a new Eina_F16p316 floating point number from standard 32-bit * integer * * @param v 32-bit integer value to convert * @return The value converted into Eina_F16p16 format */ static inline Eina_F16p16 eina_f16p16_int_from(int32_t v); /** * @brief Creates a new standard 32-bit integer from Eina_F16p16 floating point * number * * @param v Eina_F16p16 value to convert * @return The value converted into 32-bit integer */ static inline int32_t eina_f16p16_int_to(Eina_F16p16 v); /** * @brief Creates a new Eina_F16p16 floating point number from standard double * * @param v Double value to convert * @return The value converted into Eina_F16p16 format */ static inline Eina_F16p16 eina_f16p16_double_from(double v); /** * @brief Creates a new standard double from Eina_F16p16 floating point * number * * @param v Eina_F16p16 value to convert * @return The value converted into double */ static inline double eina_f16p16_double_to(Eina_F16p16 v); /** * @brief Creates a new Eina_F16p16 floating point number from standard float * * @param v Float value to convert * @return The value converted into Eina_F16p16 format */ static inline Eina_F16p16 eina_f16p16_float_from(float v); /** * @brief Creates a new standard float from Eina_F16p16 floating point * number * * @param v Eina_F16p16 value to convert * @return The value converted into float */ static inline float eina_f16p16_float_to(Eina_F16p16 v); /** * @brief Calculates the sum of two Eina_F16p16 floating point numbers * * @param a The first number * @param b The second number * @return The sum result of the two numbers @p a + @p b */ static inline Eina_F16p16 eina_f16p16_add(Eina_F16p16 a, Eina_F16p16 b); /** * @brief Calculates the subtraction of two Eina_F16p16 floating point numbers * * @param a The first number * @param b The subtracted number * @return The subtraction result of the two numbers @p a - @p b */ static inline Eina_F16p16 eina_f16p16_sub(Eina_F16p16 a, Eina_F16p16 b); /** * @brief Calculates the multiplication of two Eina_F16p16 floating point numbers * * @param a The first number * @param b The second number * @return The multiplication result of the two numbers @p a * @p b */ static inline Eina_F16p16 eina_f16p16_mul(Eina_F16p16 a, Eina_F16p16 b); /** * @brief Calculates the scale multiplication of one Eina_F16p16 floating point * number with an integer * * @param a The Eina_F16p16 number * @param b The integer value * @return The multiplication result of the two numbers @p a * @p b */ static inline Eina_F16p16 eina_f16p16_scale(Eina_F16p16 a, int b); /** * @brief Calculates the division of two Eina_F16p16 floating point numbers * * @param a The numerator number * @param b The denominator number * @return The division result of the two numbers @p a / @p b */ static inline Eina_F16p16 eina_f16p16_div(Eina_F16p16 a, Eina_F16p16 b); /** * @brief Calculates the square root of an Eina_F16p16 floating point number * * @param a The number to calculate the square root from * @return The square root result for the number @p a */ static inline Eina_F16p16 eina_f16p16_sqrt(Eina_F16p16 a); /** * @brief Gets the absolute value of the integer part of and Eina_F16p16 floating * point number * * @param v The floating point number * @return The positive integer part of the number @p v */ static inline unsigned int eina_f16p16_fracc_get(Eina_F16p16 v); /** * @brief Creates a new Eina_F16p316 floating point number from standard 32-bit * integer * * @param v 32-bit integer value to convert * @return The value converted into Eina_F8p24 format */ static inline Eina_F8p24 eina_f8p24_int_from(int32_t v); /** * @brief Creates a new standard 32-bit integer from Eina_F8p24 floating point * number * * @param v Eina_F8p24 value to convert * @return The value converted into 32-bit integer */ static inline int32_t eina_f8p24_int_to(Eina_F8p24 v); /** * @brief Creates a new Eina_F8p24 floating point number from standard float * * @param v Float value to convert * @return The value converted into Eina_F8p24 format */ static inline Eina_F8p24 eina_f8p24_float_from(float v); /** * @brief Create a new standard float from Eina_F8p24 floating point number * * @param v Eina_F8p24 value to convert * @return The value converted into float */ static inline float eina_f8p24_float_to(Eina_F8p24 v); /** * @brief Calculates the sum of two Eina_F8p24 floating point numbers * * @param a The first number * @param b The second number * @return The sum result of the two numbers @p a + @p b */ static inline Eina_F8p24 eina_f8p24_add(Eina_F8p24 a, Eina_F8p24 b); /** * @brief Calculates the subtraction of two Eina_F8p24 floating point numbers * * @param a The first number * @param b The subtracted number * @return The subtraction result of the two numbers @p a - @p b */ static inline Eina_F8p24 eina_f8p24_sub(Eina_F8p24 a, Eina_F8p24 b); /** * @brief Calculates the multiplication of two Eina_F8p24 floating point numbers * * @param a The first number * @param b The second number * @return The multiplication result of the two numbers @p a * @p b */ static inline Eina_F8p24 eina_f8p24_mul(Eina_F8p24 a, Eina_F8p24 b); /** * @brief Calculates the scale multiplication of one Eina_F8p24 floating point * number with an integer * * @param a The Eina_F16p16 number * @param b The integer value * @return The multiplication result of the two numbers @p a * @p b */ static inline Eina_F8p24 eina_f8p24_scale(Eina_F8p24 a, int b); /** * @brief Calculates the division of two Eina_F8p24 floating point numbers * * @param a The numerator number * @param b The denominator number * @return The division result of the two numbers @p a / @p b */ static inline Eina_F8p24 eina_f8p24_div(Eina_F8p24 a, Eina_F8p24 b); /** * @brief Calculates the square root of an Eina_F8p24 floating point number * * @param a The number to calculate the square root from * @return The square root result for the number @p a */ static inline Eina_F8p24 eina_f8p24_sqrt(Eina_F8p24 a); /** * @brief Gets the absolute value of the integer part of and Eina_F8p24 floating * point number * * @param v The floating point number * @return The positive integer part of the number @p v */ static inline unsigned int eina_f8p24_fracc_get(Eina_F8p24 v); /** * @brief Converts an Eina_F16p16 floating point number into Eina_F32p32 format * * @param a The Eina_F16p16 floating point number * @return The converted Eina_F32p32 floating point number */ static inline Eina_F32p32 eina_f16p16_to_f32p32(Eina_F16p16 a); /** * @brief Converts an Eina_F8p24 floating point number into Eina_F32p32 format * * @param a The Eina_F8p24 floating point number * @return The converted Eina_F32p32 floating point number */ static inline Eina_F32p32 eina_f8p24_to_f32p32(Eina_F8p24 a); /** * @brief Converts an Eina_F32p32 floating point number into Eina_F16p16 format * * @param a The Eina_F32p32 floating point number * @return The converted Eina_F16p16 floating point number */ static inline Eina_F16p16 eina_f32p32_to_f16p16(Eina_F32p32 a); /** * @brief Converts an Eina_F8p24 floating point number into Eina_F16p16 format * * @param a The Eina_F8p24 floating point number * @return The converted Eina_F16p16 floating point number */ static inline Eina_F16p16 eina_f8p24_to_f16p16(Eina_F8p24 a); /** * @brief Converts an Eina_F32p32 floating point number into Eina_F8p24 format * * @param a The Eina_F32p32 floating point number * @return The converted Eina_F8p16 floating point number */ static inline Eina_F8p24 eina_f32p32_to_f8p24(Eina_F32p32 a); /** * @brief Converts an Eina_F16p16 floating point number into Eina_F8p16 format * * @param a The Eina_F16p16 floating point number * @return The converted Eina_F8p16 floating point number */ static inline Eina_F8p24 eina_f16p16_to_f8p24(Eina_F16p16 a); #include "eina_inline_f32p32.x" #include "eina_inline_f16p16.x" #include "eina_inline_f8p24.x" #include "eina_inline_fp.x" /** * @} */ /** * @} */ #endif ``````