1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /** @file rs_cl.rsh 18 * \brief Basic math functions 19 * 20 * 21 */ 22 23 #ifndef __RS_CL_RSH__ 24 #define __RS_CL_RSH__ 25 26 // Conversions 27 #define CVT_FUNC_2(typeout, typein) \ 28 _RS_RUNTIME typeout##2 __attribute__((overloadable)) \ 29 convert_##typeout##2(typein##2 v); \ 30 _RS_RUNTIME typeout##3 __attribute__((overloadable)) \ 31 convert_##typeout##3(typein##3 v); \ 32 _RS_RUNTIME typeout##4 __attribute__((overloadable)) \ 33 convert_##typeout##4(typein##4 v); 34 35 36 #define CVT_FUNC(type) CVT_FUNC_2(type, uchar) \ 37 CVT_FUNC_2(type, char) \ 38 CVT_FUNC_2(type, ushort) \ 39 CVT_FUNC_2(type, short) \ 40 CVT_FUNC_2(type, uint) \ 41 CVT_FUNC_2(type, int) \ 42 CVT_FUNC_2(type, float) 43 44 CVT_FUNC(char) 45 CVT_FUNC(uchar) 46 CVT_FUNC(short) 47 CVT_FUNC(ushort) 48 CVT_FUNC(int) 49 CVT_FUNC(uint) 50 CVT_FUNC(float) 51 52 // Float ops, 6.11.2 53 54 #define FN_FUNC_FN(fnc) \ 55 _RS_RUNTIME float2 __attribute__((overloadable)) fnc(float2 v); \ 56 _RS_RUNTIME float3 __attribute__((overloadable)) fnc(float3 v); \ 57 _RS_RUNTIME float4 __attribute__((overloadable)) fnc(float4 v); 58 59 #define IN_FUNC_FN(fnc) \ 60 _RS_RUNTIME int2 __attribute__((overloadable)) fnc(float2 v); \ 61 _RS_RUNTIME int3 __attribute__((overloadable)) fnc(float3 v); \ 62 _RS_RUNTIME int4 __attribute__((overloadable)) fnc(float4 v); 63 64 #define FN_FUNC_FN_FN(fnc) \ 65 _RS_RUNTIME float2 __attribute__((overloadable)) fnc(float2 v1, float2 v2); \ 66 _RS_RUNTIME float3 __attribute__((overloadable)) fnc(float3 v1, float3 v2); \ 67 _RS_RUNTIME float4 __attribute__((overloadable)) fnc(float4 v1, float4 v2); 68 69 #define FN_FUNC_FN_F(fnc) \ 70 _RS_RUNTIME float2 __attribute__((overloadable)) fnc(float2 v1, float v2); \ 71 _RS_RUNTIME float3 __attribute__((overloadable)) fnc(float3 v1, float v2); \ 72 _RS_RUNTIME float4 __attribute__((overloadable)) fnc(float4 v1, float v2); 73 74 #define FN_FUNC_FN_IN(fnc) \ 75 _RS_RUNTIME float2 __attribute__((overloadable)) fnc(float2 v1, int2 v2); \ 76 _RS_RUNTIME float3 __attribute__((overloadable)) fnc(float3 v1, int3 v2); \ 77 _RS_RUNTIME float4 __attribute__((overloadable)) fnc(float4 v1, int4 v2); \ 78 79 #define FN_FUNC_FN_I(fnc) \ 80 _RS_RUNTIME float2 __attribute__((overloadable)) fnc(float2 v1, int v2); \ 81 _RS_RUNTIME float3 __attribute__((overloadable)) fnc(float3 v1, int v2); \ 82 _RS_RUNTIME float4 __attribute__((overloadable)) fnc(float4 v1, int v2); 83 84 #define FN_FUNC_FN_PFN(fnc) \ 85 _RS_RUNTIME float2 __attribute__((overloadable)) \ 86 fnc(float2 v1, float2 *v2); \ 87 _RS_RUNTIME float3 __attribute__((overloadable)) \ 88 fnc(float3 v1, float3 *v2); \ 89 _RS_RUNTIME float4 __attribute__((overloadable)) \ 90 fnc(float4 v1, float4 *v2); 91 92 #define FN_FUNC_FN_PIN(fnc) \ 93 _RS_RUNTIME float2 __attribute__((overloadable)) fnc(float2 v1, int2 *v2); \ 94 _RS_RUNTIME float3 __attribute__((overloadable)) fnc(float3 v1, int3 *v2); \ 95 _RS_RUNTIME float4 __attribute__((overloadable)) fnc(float4 v1, int4 *v2); 96 97 #define FN_FUNC_FN_FN_FN(fnc) \ 98 _RS_RUNTIME float2 __attribute__((overloadable)) \ 99 fnc(float2 v1, float2 v2, float2 v3); \ 100 _RS_RUNTIME float3 __attribute__((overloadable)) \ 101 fnc(float3 v1, float3 v2, float3 v3); \ 102 _RS_RUNTIME float4 __attribute__((overloadable)) \ 103 fnc(float4 v1, float4 v2, float4 v3); 104 105 #define FN_FUNC_FN_FN_PIN(fnc) \ 106 _RS_RUNTIME float2 __attribute__((overloadable)) \ 107 fnc(float2 v1, float2 v2, int2 *v3); \ 108 _RS_RUNTIME float3 __attribute__((overloadable)) \ 109 fnc(float3 v1, float3 v2, int3 *v3); \ 110 _RS_RUNTIME float4 __attribute__((overloadable)) \ 111 fnc(float4 v1, float4 v2, int4 *v3); 112 113 114 /** 115 * Return the inverse cosine. 116 * 117 * Supports float, float2, float3, float4 118 */ 119 extern float __attribute__((overloadable)) acos(float); 120 FN_FUNC_FN(acos) 121 122 /** 123 * Return the inverse hyperbolic cosine. 124 * 125 * Supports float, float2, float3, float4 126 */ 127 extern float __attribute__((overloadable)) acosh(float); 128 FN_FUNC_FN(acosh) 129 130 /** 131 * Return the inverse cosine divided by PI. 132 * 133 * Supports float, float2, float3, float4 134 */ 135 _RS_RUNTIME float __attribute__((overloadable)) acospi(float v); 136 FN_FUNC_FN(acospi) 137 138 /** 139 * Return the inverse sine. 140 * 141 * Supports float, float2, float3, float4 142 */ 143 extern float __attribute__((overloadable)) asin(float); 144 FN_FUNC_FN(asin) 145 146 /** 147 * Return the inverse hyperbolic sine. 148 * 149 * Supports float, float2, float3, float4 150 */ 151 extern float __attribute__((overloadable)) asinh(float); 152 FN_FUNC_FN(asinh) 153 154 155 /** 156 * Return the inverse sine divided by PI. 157 * 158 * Supports float, float2, float3, float4 159 */ 160 _RS_RUNTIME float __attribute__((overloadable)) asinpi(float v); 161 FN_FUNC_FN(asinpi) 162 163 /** 164 * Return the inverse tangent. 165 * 166 * Supports float, float2, float3, float4 167 */ 168 extern float __attribute__((overloadable)) atan(float); 169 FN_FUNC_FN(atan) 170 171 /** 172 * Return the inverse tangent of y / x. 173 * 174 * Supports float, float2, float3, float4. Both arguments must be of the same 175 * type. 176 * 177 * @param y 178 * @param x 179 */ 180 extern float __attribute__((overloadable)) atan2(float y, float x); 181 FN_FUNC_FN_FN(atan2) 182 183 /** 184 * Return the inverse hyperbolic tangent. 185 * 186 * Supports float, float2, float3, float4 187 */ 188 extern float __attribute__((overloadable)) atanh(float); 189 FN_FUNC_FN(atanh) 190 191 /** 192 * Return the inverse tangent divided by PI. 193 * 194 * Supports float, float2, float3, float4 195 */ 196 _RS_RUNTIME float __attribute__((overloadable)) atanpi(float v); 197 FN_FUNC_FN(atanpi) 198 199 /** 200 * Return the inverse tangent of y / x, divided by PI. 201 * 202 * Supports float, float2, float3, float4. Both arguments must be of the same 203 * type. 204 * 205 * @param y 206 * @param x 207 */ 208 _RS_RUNTIME float __attribute__((overloadable)) atan2pi(float y, float x); 209 FN_FUNC_FN_FN(atan2pi) 210 211 212 /** 213 * Return the cube root. 214 * 215 * Supports float, float2, float3, float4. 216 */ 217 extern float __attribute__((overloadable)) cbrt(float); 218 FN_FUNC_FN(cbrt) 219 220 /** 221 * Return the smallest integer not less than a value. 222 * 223 * Supports float, float2, float3, float4. 224 */ 225 extern float __attribute__((overloadable)) ceil(float); 226 FN_FUNC_FN(ceil) 227 228 /** 229 * Copy the sign bit from y to x. 230 * 231 * Supports float, float2, float3, float4. Both arguments must be of the same 232 * type. 233 * 234 * @param x 235 * @param y 236 */ 237 extern float __attribute__((overloadable)) copysign(float x, float y); 238 FN_FUNC_FN_FN(copysign) 239 240 /** 241 * Return the cosine. 242 * 243 * Supports float, float2, float3, float4. 244 */ 245 extern float __attribute__((overloadable)) cos(float); 246 FN_FUNC_FN(cos) 247 248 /** 249 * Return the hypebolic cosine. 250 * 251 * Supports float, float2, float3, float4. 252 */ 253 extern float __attribute__((overloadable)) cosh(float); 254 FN_FUNC_FN(cosh) 255 256 /** 257 * Return the cosine of the value * PI. 258 * 259 * Supports float, float2, float3, float4. 260 */ 261 _RS_RUNTIME float __attribute__((overloadable)) cospi(float v); 262 FN_FUNC_FN(cospi) 263 264 /** 265 * Return the complementary error function. 266 * 267 * Supports float, float2, float3, float4. 268 */ 269 extern float __attribute__((overloadable)) erfc(float); 270 FN_FUNC_FN(erfc) 271 272 /** 273 * Return the error function. 274 * 275 * Supports float, float2, float3, float4. 276 */ 277 extern float __attribute__((overloadable)) erf(float); 278 FN_FUNC_FN(erf) 279 280 /** 281 * Return e ^ value. 282 * 283 * Supports float, float2, float3, float4. 284 */ 285 extern float __attribute__((overloadable)) exp(float); 286 FN_FUNC_FN(exp) 287 288 /** 289 * Return 2 ^ value. 290 * 291 * Supports float, float2, float3, float4. 292 */ 293 extern float __attribute__((overloadable)) exp2(float); 294 FN_FUNC_FN(exp2) 295 296 /** 297 * Return x ^ y. 298 * 299 * Supports float, float2, float3, float4. Both arguments must be of the same 300 * type. 301 */ 302 extern float __attribute__((overloadable)) pow(float x, float y); 303 FN_FUNC_FN_FN(pow) 304 305 /** 306 * Return 10 ^ value. 307 * 308 * Supports float, float2, float3, float4. 309 */ 310 _RS_RUNTIME float __attribute__((overloadable)) exp10(float v); 311 FN_FUNC_FN(exp10) 312 313 /** 314 * Return (e ^ value) - 1. 315 * 316 * Supports float, float2, float3, float4. 317 */ 318 extern float __attribute__((overloadable)) expm1(float); 319 FN_FUNC_FN(expm1) 320 321 /** 322 * Return the absolute value of a value. 323 * 324 * Supports float, float2, float3, float4. 325 */ 326 extern float __attribute__((overloadable)) fabs(float); 327 FN_FUNC_FN(fabs) 328 329 /** 330 * Return the positive difference between two values. 331 * 332 * Supports float, float2, float3, float4. Both arguments must be of the same 333 * type. 334 */ 335 extern float __attribute__((overloadable)) fdim(float, float); 336 FN_FUNC_FN_FN(fdim) 337 338 /** 339 * Return the smallest integer not greater than a value. 340 * 341 * Supports float, float2, float3, float4. 342 */ 343 extern float __attribute__((overloadable)) floor(float); 344 FN_FUNC_FN(floor) 345 346 /** 347 * Return a*b + c. 348 * 349 * Supports float, float2, float3, float4. 350 */ 351 extern float __attribute__((overloadable)) fma(float a, float b, float c); 352 FN_FUNC_FN_FN_FN(fma) 353 354 /** 355 * Return (x < y ? y : x) 356 * 357 * Supports float, float2, float3, float4. 358 * @param x: may be float, float2, float3, float4 359 * @param y: may be float or vector. If vector must match type of x. 360 */ 361 extern float __attribute__((overloadable)) fmax(float x, float y); 362 FN_FUNC_FN_FN(fmax); 363 FN_FUNC_FN_F(fmax); 364 365 /** 366 * Return (x > y ? y : x) 367 * 368 * @param x: may be float, float2, float3, float4 369 * @param y: may be float or vector. If vector must match type of x. 370 */ 371 extern float __attribute__((overloadable)) fmin(float x, float y); 372 FN_FUNC_FN_FN(fmin); 373 FN_FUNC_FN_F(fmin); 374 375 /** 376 * Return the remainder from x / y 377 * 378 * Supports float, float2, float3, float4. 379 */ 380 extern float __attribute__((overloadable)) fmod(float x, float y); 381 FN_FUNC_FN_FN(fmod) 382 383 384 /** 385 * Return fractional part of v 386 * 387 * @param iptr iptr[0] will be set to the floor of the input value. 388 * Supports float, float2, float3, float4. 389 */ 390 _RS_RUNTIME float __attribute__((overloadable)) fract(float v, float *iptr); 391 FN_FUNC_FN_PFN(fract) 392 393 /** 394 * Return the mantissa and place the exponent into iptr[0] 395 * 396 * @param v Supports float, float2, float3, float4. 397 * @param iptr Must have the same vector size as v. 398 */ 399 extern float __attribute__((overloadable)) frexp(float v, int *iptr); 400 FN_FUNC_FN_PIN(frexp) 401 402 /** 403 * Return sqrt(x*x + y*y) 404 * 405 * Supports float, float2, float3, float4. 406 */ 407 extern float __attribute__((overloadable)) hypot(float x, float y); 408 FN_FUNC_FN_FN(hypot) 409 410 /** 411 * Return the integer exponent of a value 412 * 413 * Supports 1,2,3,4 components 414 */ 415 extern int __attribute__((overloadable)) ilogb(float); 416 IN_FUNC_FN(ilogb) 417 418 /** 419 * Return (x * 2^y) 420 * 421 * @param x Supports 1,2,3,4 components 422 * @param y Supports single component or matching vector. 423 */ 424 extern float __attribute__((overloadable)) ldexp(float x, int y); 425 FN_FUNC_FN_IN(ldexp) 426 FN_FUNC_FN_I(ldexp) 427 428 /** 429 * Return the log gamma 430 * 431 * Supports 1,2,3,4 components 432 */ 433 extern float __attribute__((overloadable)) lgamma(float); 434 FN_FUNC_FN(lgamma) 435 436 /** 437 * Return the log gamma and sign 438 * 439 * @param x Supports 1,2,3,4 components 440 * @param y Supports matching vector. 441 */ 442 extern float __attribute__((overloadable)) lgamma(float x, int* y); 443 FN_FUNC_FN_PIN(lgamma) 444 445 /** 446 * Return the natural logarithm 447 * 448 * Supports 1,2,3,4 components 449 */ 450 extern float __attribute__((overloadable)) log(float); 451 FN_FUNC_FN(log) 452 453 /** 454 * Return the base 10 logarithm 455 * 456 * Supports 1,2,3,4 components 457 */ 458 extern float __attribute__((overloadable)) log10(float); 459 FN_FUNC_FN(log10) 460 461 /** 462 * Return the base 2 logarithm 463 * 464 * Supports 1,2,3,4 components 465 */ 466 _RS_RUNTIME float __attribute__((overloadable)) log2(float v); 467 FN_FUNC_FN(log2) 468 469 /** 470 * Return the natural logarithm of (v + 1.0f) 471 * 472 * Supports 1,2,3,4 components 473 */ 474 extern float __attribute__((overloadable)) log1p(float v); 475 FN_FUNC_FN(log1p) 476 477 /** 478 * Compute the exponent of the value. 479 * 480 * Supports 1,2,3,4 components 481 */ 482 extern float __attribute__((overloadable)) logb(float); 483 FN_FUNC_FN(logb) 484 485 /** 486 * Compute (a * b) + c 487 * 488 * Supports 1,2,3,4 components 489 */ 490 extern float __attribute__((overloadable)) mad(float a, float b, float c); 491 FN_FUNC_FN_FN_FN(mad) 492 493 /** 494 * Return the integral and fractional components of a number 495 * Supports 1,2,3,4 components 496 * 497 * @param x Source value 498 * @param iret iret[0] will be set to the integral portion of the number. 499 * @return The floating point portion of the value. 500 */ 501 extern float __attribute__((overloadable)) modf(float x, float *iret); 502 FN_FUNC_FN_PFN(modf); 503 504 //extern float __attribute__((overloadable)) nan(uint); 505 506 /** 507 * Return the next floating point number from x towards y. 508 * 509 * Supports 1,2,3,4 components 510 */ 511 extern float __attribute__((overloadable)) nextafter(float x, float y); 512 FN_FUNC_FN_FN(nextafter) 513 514 /** 515 * Return (v ^ p). 516 * 517 * Supports 1,2,3,4 components 518 */ 519 _RS_RUNTIME float __attribute__((overloadable)) pown(float v, int p); 520 FN_FUNC_FN_IN(pown) 521 522 /** 523 * Return (v ^ p). 524 * @param v must be greater than 0. 525 * 526 * Supports 1,2,3,4 components 527 */ 528 _RS_RUNTIME float __attribute__((overloadable)) powr(float v, float p); 529 FN_FUNC_FN_FN(powr) 530 531 /** 532 * Return round x/y to the nearest integer then compute the remander. 533 * 534 * Supports 1,2,3,4 components 535 */ 536 extern float __attribute__((overloadable)) remainder(float x, float y); 537 FN_FUNC_FN_FN(remainder) 538 539 // document once we know the precision of bionic 540 extern float __attribute__((overloadable)) remquo(float, float, int *); 541 FN_FUNC_FN_FN_PIN(remquo) 542 543 /** 544 * Round to the nearest integral value. 545 * 546 * Supports 1,2,3,4 components 547 */ 548 extern float __attribute__((overloadable)) rint(float); 549 FN_FUNC_FN(rint) 550 551 /** 552 * Compute the Nth root of a value. 553 * 554 * Supports 1,2,3,4 components 555 */ 556 _RS_RUNTIME float __attribute__((overloadable)) rootn(float v, int n); 557 FN_FUNC_FN_IN(rootn) 558 559 /** 560 * Round to the nearest integral value. Half values are rounded away from zero. 561 * 562 * Supports 1,2,3,4 components 563 */ 564 extern float __attribute__((overloadable)) round(float); 565 FN_FUNC_FN(round) 566 567 /** 568 * Return the square root of a value. 569 * 570 * Supports 1,2,3,4 components 571 */ 572 extern float __attribute__((overloadable)) sqrt(float); 573 FN_FUNC_FN(sqrt) 574 575 /** 576 * Return (1 / sqrt(value)). 577 * 578 * @param v The incoming value in radians 579 * Supports 1,2,3,4 components 580 */ 581 _RS_RUNTIME float __attribute__((overloadable)) rsqrt(float v); 582 FN_FUNC_FN(rsqrt) 583 584 /** 585 * Return the sine of a value specified in radians. 586 * 587 * @param v The incoming value in radians 588 * Supports 1,2,3,4 components 589 */ 590 extern float __attribute__((overloadable)) sin(float v); 591 FN_FUNC_FN(sin) 592 593 /** 594 * Return the sine and cosine of a value. 595 * 596 * @return sine 597 * @param v The incoming value in radians 598 * @param *cosptr cosptr[0] will be set to the cosine value. 599 * 600 * Supports 1,2,3,4 components 601 */ 602 _RS_RUNTIME float __attribute__((overloadable)) sincos(float v, float *cosptr); 603 FN_FUNC_FN_PFN(sincos); 604 605 /** 606 * Return the hyperbolic sine of a value specified in radians. 607 * 608 * Supports 1,2,3,4 components 609 */ 610 extern float __attribute__((overloadable)) sinh(float); 611 FN_FUNC_FN(sinh) 612 613 /** 614 * Return the sin(v * PI). 615 * 616 * Supports 1,2,3,4 components 617 */ 618 _RS_RUNTIME float __attribute__((overloadable)) sinpi(float v); 619 FN_FUNC_FN(sinpi) 620 621 /** 622 * Return the tangent of a value. 623 * 624 * Supports 1,2,3,4 components 625 * @param v The incoming value in radians 626 */ 627 extern float __attribute__((overloadable)) tan(float v); 628 FN_FUNC_FN(tan) 629 630 /** 631 * Return the hyperbolic tangent of a value. 632 * 633 * Supports 1,2,3,4 components 634 * @param v The incoming value in radians 635 */ 636 extern float __attribute__((overloadable)) tanh(float); 637 FN_FUNC_FN(tanh) 638 639 /** 640 * Return tan(v * PI) 641 * 642 * Supports 1,2,3,4 components 643 */ 644 _RS_RUNTIME float __attribute__((overloadable)) tanpi(float v); 645 FN_FUNC_FN(tanpi) 646 647 /** 648 * Compute the gamma function of a value. 649 * 650 * Supports 1,2,3,4 components 651 */ 652 extern float __attribute__((overloadable)) tgamma(float); 653 FN_FUNC_FN(tgamma) 654 655 /** 656 * Round to integral using truncation. 657 * 658 * Supports 1,2,3,4 components 659 */ 660 extern float __attribute__((overloadable)) trunc(float); 661 FN_FUNC_FN(trunc) 662 663 664 #define XN_FUNC_YN(typeout, fnc, typein) \ 665 extern typeout __attribute__((overloadable)) fnc(typein); \ 666 _RS_RUNTIME typeout##2 __attribute__((overloadable)) fnc(typein##2 v); \ 667 _RS_RUNTIME typeout##3 __attribute__((overloadable)) fnc(typein##3 v); \ 668 _RS_RUNTIME typeout##4 __attribute__((overloadable)) fnc(typein##4 v); 669 670 #define UIN_FUNC_IN(fnc) \ 671 XN_FUNC_YN(uchar, fnc, char) \ 672 XN_FUNC_YN(ushort, fnc, short) \ 673 XN_FUNC_YN(uint, fnc, int) 674 675 #define IN_FUNC_IN(fnc) \ 676 XN_FUNC_YN(uchar, fnc, uchar) \ 677 XN_FUNC_YN(char, fnc, char) \ 678 XN_FUNC_YN(ushort, fnc, ushort) \ 679 XN_FUNC_YN(short, fnc, short) \ 680 XN_FUNC_YN(uint, fnc, uint) \ 681 XN_FUNC_YN(int, fnc, int) 682 683 684 #define XN_FUNC_XN_XN_BODY(type, fnc, body) \ 685 _RS_RUNTIME type __attribute__((overloadable)) \ 686 fnc(type v1, type v2); \ 687 _RS_RUNTIME type##2 __attribute__((overloadable)) \ 688 fnc(type##2 v1, type##2 v2); \ 689 _RS_RUNTIME type##3 __attribute__((overloadable)) \ 690 fnc(type##3 v1, type##3 v2); \ 691 _RS_RUNTIME type##4 __attribute__((overloadable)) \ 692 fnc(type##4 v1, type##4 v2); 693 694 #define IN_FUNC_IN_IN_BODY(fnc, body) \ 695 XN_FUNC_XN_XN_BODY(uchar, fnc, body) \ 696 XN_FUNC_XN_XN_BODY(char, fnc, body) \ 697 XN_FUNC_XN_XN_BODY(ushort, fnc, body) \ 698 XN_FUNC_XN_XN_BODY(short, fnc, body) \ 699 XN_FUNC_XN_XN_BODY(uint, fnc, body) \ 700 XN_FUNC_XN_XN_BODY(int, fnc, body) \ 701 XN_FUNC_XN_XN_BODY(float, fnc, body) 702 703 UIN_FUNC_IN(abs) 704 IN_FUNC_IN(clz) 705 706 /** 707 * Return the minimum of two values. 708 * 709 * Supports 1,2,3,4 components of uchar, char, ushort, short, uint, int, float. 710 */ 711 IN_FUNC_IN_IN_BODY(min, (v1 < v2 ? v1 : v2)) 712 FN_FUNC_FN_F(min) 713 714 /** 715 * Return the maximum of two values. 716 * 717 * Supports 1,2,3,4 components of uchar, char, ushort, short, uint, int, float. 718 */ 719 IN_FUNC_IN_IN_BODY(max, (v1 > v2 ? v1 : v2)) 720 FN_FUNC_FN_F(max) 721 722 /** 723 * Clamp a value to a specified high and low bound. 724 * 725 * @param amount value to be clamped. Supports 1,2,3,4 components 726 * @param low Lower bound, must be scalar or matching vector. 727 * @param high High bound, must match type of low 728 */ 729 _RS_RUNTIME float __attribute__((overloadable)) clamp(float amount, float low, float high); 730 _RS_RUNTIME float2 __attribute__((overloadable)) clamp(float2 amount, float2 low, float2 high); 731 _RS_RUNTIME float3 __attribute__((overloadable)) clamp(float3 amount, float3 low, float3 high); 732 _RS_RUNTIME float4 __attribute__((overloadable)) clamp(float4 amount, float4 low, float4 high); 733 _RS_RUNTIME float2 __attribute__((overloadable)) clamp(float2 amount, float low, float high); 734 _RS_RUNTIME float3 __attribute__((overloadable)) clamp(float3 amount, float low, float high); 735 _RS_RUNTIME float4 __attribute__((overloadable)) clamp(float4 amount, float low, float high); 736 737 /** 738 * Convert from radians to degrees. 739 * 740 * Supports 1,2,3,4 components 741 */ 742 _RS_RUNTIME float __attribute__((overloadable)) degrees(float radians); 743 FN_FUNC_FN(degrees) 744 745 /** 746 * return start + ((stop - start) * amount); 747 * 748 * Supports 1,2,3,4 components 749 */ 750 _RS_RUNTIME float __attribute__((overloadable)) mix(float start, float stop, float amount); 751 _RS_RUNTIME float2 __attribute__((overloadable)) mix(float2 start, float2 stop, float2 amount); 752 _RS_RUNTIME float3 __attribute__((overloadable)) mix(float3 start, float3 stop, float3 amount); 753 _RS_RUNTIME float4 __attribute__((overloadable)) mix(float4 start, float4 stop, float4 amount); 754 _RS_RUNTIME float2 __attribute__((overloadable)) mix(float2 start, float2 stop, float amount); 755 _RS_RUNTIME float3 __attribute__((overloadable)) mix(float3 start, float3 stop, float amount); 756 _RS_RUNTIME float4 __attribute__((overloadable)) mix(float4 start, float4 stop, float amount); 757 758 /** 759 * Convert from degrees to radians. 760 * 761 * Supports 1,2,3,4 components 762 */ 763 _RS_RUNTIME float __attribute__((overloadable)) radians(float degrees); 764 FN_FUNC_FN(radians) 765 766 /** 767 * if (v < edge) 768 * return 0.f; 769 * else 770 * return 1.f; 771 * 772 * Supports 1,2,3,4 components 773 */ 774 _RS_RUNTIME float __attribute__((overloadable)) step(float edge, float v); 775 _RS_RUNTIME float2 __attribute__((overloadable)) step(float2 edge, float2 v); 776 _RS_RUNTIME float3 __attribute__((overloadable)) step(float3 edge, float3 v); 777 _RS_RUNTIME float4 __attribute__((overloadable)) step(float4 edge, float4 v); 778 _RS_RUNTIME float2 __attribute__((overloadable)) step(float2 edge, float v); 779 _RS_RUNTIME float3 __attribute__((overloadable)) step(float3 edge, float v); 780 _RS_RUNTIME float4 __attribute__((overloadable)) step(float4 edge, float v); 781 782 // not implemented 783 extern float __attribute__((overloadable)) smoothstep(float, float, float); 784 extern float2 __attribute__((overloadable)) smoothstep(float2, float2, float2); 785 extern float3 __attribute__((overloadable)) smoothstep(float3, float3, float3); 786 extern float4 __attribute__((overloadable)) smoothstep(float4, float4, float4); 787 extern float2 __attribute__((overloadable)) smoothstep(float, float, float2); 788 extern float3 __attribute__((overloadable)) smoothstep(float, float, float3); 789 extern float4 __attribute__((overloadable)) smoothstep(float, float, float4); 790 791 /** 792 * if (v < 0) return -1.f; 793 * else if (v > 0) return 1.f; 794 * else return 0.f; 795 * 796 * Supports 1,2,3,4 components 797 */ 798 _RS_RUNTIME float __attribute__((overloadable)) sign(float v); 799 FN_FUNC_FN(sign) 800 801 /** 802 * Compute the cross product of two vectors. 803 * 804 * Supports 3,4 components 805 */ 806 _RS_RUNTIME float3 __attribute__((overloadable)) cross(float3 lhs, float3 rhs); 807 _RS_RUNTIME float4 __attribute__((overloadable)) cross(float4 lhs, float4 rhs); 808 809 /** 810 * Compute the dot product of two vectors. 811 * 812 * Supports 1,2,3,4 components 813 */ 814 _RS_RUNTIME float __attribute__((overloadable)) dot(float lhs, float rhs); 815 _RS_RUNTIME float __attribute__((overloadable)) dot(float2 lhs, float2 rhs); 816 _RS_RUNTIME float __attribute__((overloadable)) dot(float3 lhs, float3 rhs); 817 _RS_RUNTIME float __attribute__((overloadable)) dot(float4 lhs, float4 rhs); 818 819 /** 820 * Compute the length of a vector. 821 * 822 * Supports 1,2,3,4 components 823 */ 824 _RS_RUNTIME float __attribute__((overloadable)) length(float v); 825 _RS_RUNTIME float __attribute__((overloadable)) length(float2 v); 826 _RS_RUNTIME float __attribute__((overloadable)) length(float3 v); 827 _RS_RUNTIME float __attribute__((overloadable)) length(float4 v); 828 829 /** 830 * Compute the distance between two points. 831 * 832 * Supports 1,2,3,4 components 833 */ 834 _RS_RUNTIME float __attribute__((overloadable)) distance(float lhs, float rhs); 835 _RS_RUNTIME float __attribute__((overloadable)) distance(float2 lhs, float2 rhs); 836 _RS_RUNTIME float __attribute__((overloadable)) distance(float3 lhs, float3 rhs); 837 _RS_RUNTIME float __attribute__((overloadable)) distance(float4 lhs, float4 rhs); 838 839 /** 840 * Normalize a vector. 841 * 842 * Supports 1,2,3,4 components 843 */ 844 _RS_RUNTIME float __attribute__((overloadable)) normalize(float v); 845 _RS_RUNTIME float2 __attribute__((overloadable)) normalize(float2 v); 846 _RS_RUNTIME float3 __attribute__((overloadable)) normalize(float3 v); 847 _RS_RUNTIME float4 __attribute__((overloadable)) normalize(float4 v); 848 849 #undef CVT_FUNC 850 #undef CVT_FUNC_2 851 #undef FN_FUNC_FN 852 #undef IN_FUNC_FN 853 #undef FN_FUNC_FN_FN 854 #undef FN_FUNC_FN_F 855 #undef FN_FUNC_FN_IN 856 #undef FN_FUNC_FN_I 857 #undef FN_FUNC_FN_PFN 858 #undef FN_FUNC_FN_PIN 859 #undef FN_FUNC_FN_FN_FN 860 #undef FN_FUNC_FN_FN_PIN 861 #undef XN_FUNC_YN 862 #undef UIN_FUNC_IN 863 #undef IN_FUNC_IN 864 #undef XN_FUNC_XN_XN_BODY 865 #undef IN_FUNC_IN_IN_BODY 866 867 #endif 868
