SDL  2.0
SDL_test_fuzzer.c File Reference
#include "SDL_config.h"
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <float.h>
#include "SDL_test.h"
+ Include dependency graph for SDL_test_fuzzer.c:

Go to the source code of this file.

Functions

void SDLTest_FuzzerInit (Uint64 execKey)
 
int SDLTest_GetFuzzerInvocationCount ()
 
Uint8 SDLTest_RandomUint8 ()
 
Sint8 SDLTest_RandomSint8 ()
 
Uint16 SDLTest_RandomUint16 ()
 
Sint16 SDLTest_RandomSint16 ()
 
Sint32 SDLTest_RandomSint32 ()
 
Uint32 SDLTest_RandomUint32 ()
 
Uint64 SDLTest_RandomUint64 ()
 
Sint64 SDLTest_RandomSint64 ()
 
Sint32 SDLTest_RandomIntegerInRange (Sint32 pMin, Sint32 pMax)
 
static Uint64 SDLTest_GenerateUnsignedBoundaryValues (const Uint64 maxValue, Uint64 boundary1, Uint64 boundary2, SDL_bool validDomain)
 
Uint8 SDLTest_RandomUint8BoundaryValue (Uint8 boundary1, Uint8 boundary2, SDL_bool validDomain)
 
Uint16 SDLTest_RandomUint16BoundaryValue (Uint16 boundary1, Uint16 boundary2, SDL_bool validDomain)
 
Uint32 SDLTest_RandomUint32BoundaryValue (Uint32 boundary1, Uint32 boundary2, SDL_bool validDomain)
 
Uint64 SDLTest_RandomUint64BoundaryValue (Uint64 boundary1, Uint64 boundary2, SDL_bool validDomain)
 
static Sint64 SDLTest_GenerateSignedBoundaryValues (const Sint64 minValue, const Sint64 maxValue, Sint64 boundary1, Sint64 boundary2, SDL_bool validDomain)
 
Sint8 SDLTest_RandomSint8BoundaryValue (Sint8 boundary1, Sint8 boundary2, SDL_bool validDomain)
 
Sint16 SDLTest_RandomSint16BoundaryValue (Sint16 boundary1, Sint16 boundary2, SDL_bool validDomain)
 
Sint32 SDLTest_RandomSint32BoundaryValue (Sint32 boundary1, Sint32 boundary2, SDL_bool validDomain)
 
Sint64 SDLTest_RandomSint64BoundaryValue (Sint64 boundary1, Sint64 boundary2, SDL_bool validDomain)
 
float SDLTest_RandomUnitFloat ()
 
float SDLTest_RandomFloat ()
 
double SDLTest_RandomUnitDouble ()
 
double SDLTest_RandomDouble ()
 
char * SDLTest_RandomAsciiString ()
 
char * SDLTest_RandomAsciiStringWithMaximumLength (int maxLength)
 
char * SDLTest_RandomAsciiStringOfSize (int size)
 

Variables

static int fuzzerInvocationCounter = 0
 
static SDLTest_RandomContext rndContext
 

Function Documentation

◆ SDLTest_FuzzerInit()

void SDLTest_FuzzerInit ( Uint64  execKey)

Initializes the fuzzer for a test

Parameters
execKeyExecution "Key" that initializes the random number generator uniquely for the test.

Definition at line 63 of file SDL_test_fuzzer.c.

64 {
65  Uint32 a = (execKey >> 32) & 0x00000000FFFFFFFF;
66  Uint32 b = execKey & 0x00000000FFFFFFFF;
67  SDL_memset((void *)&rndContext, 0, sizeof(SDLTest_RandomContext));
70 }

References fuzzerInvocationCounter, rndContext, SDL_memset, and SDLTest_RandomInit().

Referenced by main(), and SDLTest_RunTest().

◆ SDLTest_GenerateSignedBoundaryValues()

static Sint64 SDLTest_GenerateSignedBoundaryValues ( const Sint64  minValue,
const Sint64  maxValue,
Sint64  boundary1,
Sint64  boundary2,
SDL_bool  validDomain 
)
static

Definition at line 340 of file SDL_test_fuzzer.c.

341 {
342  Sint64 b1, b2;
343  Sint64 delta;
344  Sint64 tempBuf[4];
345  Uint8 index;
346 
347  /* Maybe swap */
348  if (boundary1 > boundary2) {
349  b1 = boundary2;
350  b2 = boundary1;
351  } else {
352  b1 = boundary1;
353  b2 = boundary2;
354  }
355 
356  index = 0;
357  if (validDomain == SDL_TRUE) {
358  if (b1 == b2) {
359  return b1;
360  }
361 
362  /* Generate up to 4 values within bounds */
363  delta = b2 - b1;
364  if (delta < 4) {
365  do {
366  tempBuf[index] = b1 + index;
367  index++;
368  } while (index < delta);
369  } else {
370  tempBuf[index] = b1;
371  index++;
372  tempBuf[index] = b1 + 1;
373  index++;
374  tempBuf[index] = b2 - 1;
375  index++;
376  tempBuf[index] = b2;
377  index++;
378  }
379  } else {
380  /* Generate up to 2 values outside of bounds */
381  if (b1 > minValue) {
382  tempBuf[index] = b1 - 1;
383  index++;
384  }
385 
386  if (b2 < maxValue) {
387  tempBuf[index] = b2 + 1;
388  index++;
389  }
390  }
391 
392  if (index == 0) {
393  /* There are no valid boundaries */
394  SDL_Unsupported();
395  return minValue;
396  }
397 
398  return tempBuf[SDLTest_RandomUint8() % index];
399 }

References SDL_TRUE, SDL_Unsupported, and SDLTest_RandomUint8().

Referenced by SDLTest_RandomSint16BoundaryValue(), SDLTest_RandomSint32BoundaryValue(), SDLTest_RandomSint64BoundaryValue(), and SDLTest_RandomSint8BoundaryValue().

◆ SDLTest_GenerateUnsignedBoundaryValues()

static Uint64 SDLTest_GenerateUnsignedBoundaryValues ( const Uint64  maxValue,
Uint64  boundary1,
Uint64  boundary2,
SDL_bool  validDomain 
)
static

Definition at line 208 of file SDL_test_fuzzer.c.

209 {
210  Uint64 b1, b2;
211  Uint64 delta;
212  Uint64 tempBuf[4];
213  Uint8 index;
214 
215  /* Maybe swap */
216  if (boundary1 > boundary2) {
217  b1 = boundary2;
218  b2 = boundary1;
219  } else {
220  b1 = boundary1;
221  b2 = boundary2;
222  }
223 
224  index = 0;
225  if (validDomain == SDL_TRUE) {
226  if (b1 == b2) {
227  return b1;
228  }
229 
230  /* Generate up to 4 values within bounds */
231  delta = b2 - b1;
232  if (delta < 4) {
233  do {
234  tempBuf[index] = b1 + index;
235  index++;
236  } while (index < delta);
237  } else {
238  tempBuf[index] = b1;
239  index++;
240  tempBuf[index] = b1 + 1;
241  index++;
242  tempBuf[index] = b2 - 1;
243  index++;
244  tempBuf[index] = b2;
245  index++;
246  }
247  } else {
248  /* Generate up to 2 values outside of bounds */
249  if (b1 > 0) {
250  tempBuf[index] = b1 - 1;
251  index++;
252  }
253 
254  if (b2 < maxValue) {
255  tempBuf[index] = b2 + 1;
256  index++;
257  }
258  }
259 
260  if (index == 0) {
261  /* There are no valid boundaries */
262  SDL_Unsupported();
263  return 0;
264  }
265 
266  return tempBuf[SDLTest_RandomUint8() % index];
267 }

References SDL_TRUE, SDL_Unsupported, and SDLTest_RandomUint8().

Referenced by SDLTest_RandomUint16BoundaryValue(), SDLTest_RandomUint32BoundaryValue(), SDLTest_RandomUint64BoundaryValue(), and SDLTest_RandomUint8BoundaryValue().

◆ SDLTest_GetFuzzerInvocationCount()

int SDLTest_GetFuzzerInvocationCount ( void  )

Returns the invocation count for the fuzzer since last ...FuzzerInit.

Definition at line 73 of file SDL_test_fuzzer.c.

74 {
76 }

References fuzzerInvocationCounter.

Referenced by sdltest_getFuzzerInvocationCount(), and SDLTest_RunTest().

◆ SDLTest_RandomAsciiString()

char* SDLTest_RandomAsciiString ( void  )

Generates random null-terminated string. The minimum length for the string is 1 character, maximum length for the string is 255 characters and it can contain ASCII characters from 32 to 126.

Note: Returned string needs to be deallocated.

Returns
Newly allocated random string; or NULL if length was invalid or string could not be allocated.

Definition at line 486 of file SDL_test_fuzzer.c.

487 {
489 }

References SDLTest_RandomAsciiStringWithMaximumLength().

Referenced by clipboard_testClipboardTextFunctions(), clipboard_testSetClipboardText(), and sdltest_randomAsciiString().

◆ SDLTest_RandomAsciiStringOfSize()

char* SDLTest_RandomAsciiStringOfSize ( int  size)

Generates random null-terminated string. The length for the string is defined by the size parameter. String can contain ASCII characters from 32 to 126.

Note: Returned string needs to be deallocated.

Parameters
sizeThe length of the generated string
Returns
Newly allocated random string; or NULL if size was invalid or string could not be allocated.

Definition at line 507 of file SDL_test_fuzzer.c.

508 {
509  char *string;
510  int counter;
511 
512 
513  if(size < 1) {
514  SDL_InvalidParamError("size");
515  return NULL;
516  }
517 
518  string = (char *)SDL_malloc((size + 1) * sizeof(char));
519  if (string==NULL) {
520  return NULL;
521  }
522 
523  for(counter = 0; counter < size; ++counter) {
524  string[counter] = (char)SDLTest_RandomIntegerInRange(32, 126);
525  }
526 
527  string[counter] = '\0';
528 
530 
531  return string;
532 }

References fuzzerInvocationCounter, NULL, SDL_InvalidParamError, SDL_malloc, and SDLTest_RandomIntegerInRange().

Referenced by hints_setHint(), keyboard_getScancodeFromNameNegative(), sdltest_randomAsciiStringOfSize(), SDLTest_RandomAsciiStringWithMaximumLength(), stdlib_getsetenv(), and video_getSetWindowData().

◆ SDLTest_RandomAsciiStringWithMaximumLength()

char* SDLTest_RandomAsciiStringWithMaximumLength ( int  maxLength)

Generates random null-terminated string. The maximum length for the string is defined by the maxLength parameter. String can contain ASCII characters from 32 to 126.

Note: Returned string needs to be deallocated.

Parameters
maxLengthThe maximum length of the generated string.
Returns
Newly allocated random string; or NULL if maxLength was invalid or string could not be allocated.

Definition at line 492 of file SDL_test_fuzzer.c.

493 {
494  int size;
495 
496  if(maxLength < 1) {
497  SDL_InvalidParamError("maxLength");
498  return NULL;
499  }
500 
501  size = (SDLTest_RandomUint32() % (maxLength + 1));
502 
504 }

References NULL, SDL_InvalidParamError, SDLTest_RandomAsciiStringOfSize(), and SDLTest_RandomUint32().

Referenced by SDLTest_RandomAsciiString(), and sdltest_randomAsciiStringWithMaximumLength().

◆ SDLTest_RandomDouble()

double SDLTest_RandomDouble ( void  )
Returns
random double.

Definition at line 470 of file SDL_test_fuzzer.c.

471 {
472  double r = 0.0;
473  double s = 1.0;
474  do {
475  s /= UINT_MAX + 1.0;
476  r += (double)SDLTest_RandomInt(&rndContext) * s;
477  } while (s > DBL_EPSILON);
478 
480 
481  return r;
482 }

References fuzzerInvocationCounter, rndContext, and SDLTest_RandomInt.

Referenced by sdltest_randomNumber().

◆ SDLTest_RandomFloat()

float SDLTest_RandomFloat ( void  )
Returns
random float.

Definition at line 458 of file SDL_test_fuzzer.c.

459 {
460  return (float) (SDLTest_RandomUnitDouble() * (double)2.0 * (double)FLT_MAX - (double)(FLT_MAX));
461 }

References SDLTest_RandomUnitDouble().

Referenced by sdltest_randomNumber().

◆ SDLTest_RandomIntegerInRange()

Sint32 SDLTest_RandomIntegerInRange ( Sint32  min,
Sint32  max 
)

Returns integer in range [min, max] (inclusive). Min and max values can be negative values. If Max in smaller than min, then the values are swapped. Min and max are the same value, that value will be returned.

Parameters
minMinimum inclusive value of returned random number
maxMaximum inclusive value of returned random number
Returns
Generated random integer in range

Definition at line 163 of file SDL_test_fuzzer.c.

164 {
165  Sint64 min = pMin;
166  Sint64 max = pMax;
167  Sint64 temp;
168  Sint64 number;
169 
170  if(pMin > pMax) {
171  temp = min;
172  min = max;
173  max = temp;
174  } else if(pMin == pMax) {
175  return (Sint32)min;
176  }
177 
178  number = SDLTest_RandomUint32();
179  /* invocation count increment in preceeding call */
180 
181  return (Sint32)((number % ((max + 1) - min)) + min);
182 }

References SDLTest_RandomUint32().

Referenced by _createVideoSuiteTestWindow(), _testGenericRWopsValidations(), audio_buildAudioCVT(), audio_convertAudio(), audio_enumerateAndNameAudioDevices(), audio_enumerateAndNameAudioDevicesNegativeTests(), audio_pauseUnpauseAudio(), events_addDelEventWatchWithUserdata(), keyboard_getKeyNameNegative(), keyboard_getSetModState(), keyboard_setTextInputRect(), main(), mouse_getMouseFocus(), mouse_warpMouseInWindow(), pixels_allocFreePalette(), pixels_calcGammaRamp(), rect_testEnclosePoints(), rect_testEnclosePointsParam(), rect_testEnclosePointsRepeatedInput(), rect_testEnclosePointsWithClipping(), rect_testHasIntersectionEmpty(), rect_testHasIntersectionInside(), rect_testHasIntersectionOutside(), rect_testHasIntersectionPartial(), rect_testHasIntersectionPoint(), rect_testIntersectRectAndLine(), rect_testIntersectRectAndLineEmpty(), rect_testIntersectRectAndLineInside(), rect_testIntersectRectAndLineOutside(), rect_testIntersectRectEmpty(), rect_testIntersectRectInside(), rect_testIntersectRectOutside(), rect_testIntersectRectPartial(), rect_testIntersectRectPoint(), rect_testRectEmpty(), rect_testRectEquals(), rect_testRectEqualsParam(), rect_testUnionRectEmpty(), rect_testUnionRectInside(), rect_testUnionRectOutside(), SDLTest_RandomAsciiStringOfSize(), sdltest_randomIntegerInRange(), stdlib_getsetenv(), timer_addRemoveTimer(), timer_delayAndGetTicks(), video_createWindowVariousFlags(), video_createWindowVariousPositions(), video_createWindowVariousSizes(), video_getClosestDisplayModeRandomResolution(), video_getNumDisplayModesNegative(), video_getSetWindowData(), video_getSetWindowMaximumSize(), video_getSetWindowMinimumSize(), video_getSetWindowPosition(), video_getSetWindowSize(), and video_getWindowId().

◆ SDLTest_RandomSint16()

Sint16 SDLTest_RandomSint16 ( void  )

Returns a random Sint16

Returns
Generated signed integer

Definition at line 103 of file SDL_test_fuzzer.c.

104 {
106 
107  return (Sint16) SDLTest_RandomInt(&rndContext) & 0x0000FFFF;
108 }

References fuzzerInvocationCounter, rndContext, and SDLTest_RandomInt.

Referenced by sdltest_randomIntegerInRange(), and sdltest_randomNumber().

◆ SDLTest_RandomSint16BoundaryValue()

Sint16 SDLTest_RandomSint16BoundaryValue ( Sint16  boundary1,
Sint16  boundary2,
SDL_bool  validDomain 
)

Returns a random boundary value for Sint16 within the given boundaries. Boundaries are inclusive, see the usage examples below. If validDomain is true, the function will only return valid boundaries, otherwise non-valid boundaries are also possible. If boundary1 > boundary2, the values are swapped

Usage examples: RandomSint16BoundaryValue(-10, 20, SDL_TRUE) returns -11, -10, 19 or 20 RandomSint16BoundaryValue(-100, -10, SDL_FALSE) returns -101 or -9 RandomSint16BoundaryValue(SINT16_MIN, 99, SDL_FALSE) returns 100 RandomSint16BoundaryValue(SINT16_MIN, SINT16_MAX, SDL_FALSE) returns SINT16_MIN (== error value) with error set

Parameters
boundary1Lower boundary limit
boundary2Upper boundary limit
validDomainShould the generated boundary be valid (=within the bounds) or not?
Returns
Random boundary value for the given range and domain or SINT16_MIN with error set

Definition at line 414 of file SDL_test_fuzzer.c.

415 {
416  /* min & max values for Sint16 */
417  const Sint64 maxValue = SHRT_MAX;
418  const Sint64 minValue = SHRT_MIN;
419  return (Sint16)SDLTest_GenerateSignedBoundaryValues(minValue, maxValue,
420  (Sint64) boundary1, (Sint64) boundary2,
421  validDomain);
422 }

References SDLTest_GenerateSignedBoundaryValues().

Referenced by sdltest_randomBoundaryNumberSint16().

◆ SDLTest_RandomSint32()

◆ SDLTest_RandomSint32BoundaryValue()

Sint32 SDLTest_RandomSint32BoundaryValue ( Sint32  boundary1,
Sint32  boundary2,
SDL_bool  validDomain 
)

Returns a random boundary value for Sint32 within the given boundaries. Boundaries are inclusive, see the usage examples below. If validDomain is true, the function will only return valid boundaries, otherwise non-valid boundaries are also possible. If boundary1 > boundary2, the values are swapped

Usage examples: RandomSint32BoundaryValue(-10, 20, SDL_TRUE) returns -11, -10, 19 or 20 RandomSint32BoundaryValue(-100, -10, SDL_FALSE) returns -101 or -9 RandomSint32BoundaryValue(SINT32_MIN, 99, SDL_FALSE) returns 100 RandomSint32BoundaryValue(SINT32_MIN, SINT32_MAX, SDL_FALSE) returns SINT32_MIN (== error value)

Parameters
boundary1Lower boundary limit
boundary2Upper boundary limit
validDomainShould the generated boundary be valid (=within the bounds) or not?
Returns
Random boundary value for the given range and domain or SINT32_MIN with error set

Definition at line 425 of file SDL_test_fuzzer.c.

426 {
427  /* min & max values for Sint32 */
428  #if ((ULONG_MAX) == (UINT_MAX))
429  const Sint64 maxValue = LONG_MAX;
430  const Sint64 minValue = LONG_MIN;
431  #else
432  const Sint64 maxValue = INT_MAX;
433  const Sint64 minValue = INT_MIN;
434  #endif
435  return (Sint32)SDLTest_GenerateSignedBoundaryValues(minValue, maxValue,
436  (Sint64) boundary1, (Sint64) boundary2,
437  validDomain);
438 }

References INT_MAX, and SDLTest_GenerateSignedBoundaryValues().

Referenced by sdltest_randomBoundaryNumberSint32(), and video_getNumDisplayModesNegative().

◆ SDLTest_RandomSint64()

Sint64 SDLTest_RandomSint64 ( void  )

Returns random Sint64.

Returns
Generated signed integer

Definition at line 144 of file SDL_test_fuzzer.c.

145 {
146  union {
147  Uint64 v64;
148  Uint32 v32[2];
149  } value;
150  value.v64 = 0;
151 
153 
154  value.v32[0] = SDLTest_RandomSint32();
155  value.v32[1] = SDLTest_RandomSint32();
156 
157  return (Sint64)value.v64;
158 }

References fuzzerInvocationCounter, and SDLTest_RandomSint32().

Referenced by sdltest_randomNumber().

◆ SDLTest_RandomSint64BoundaryValue()

Sint64 SDLTest_RandomSint64BoundaryValue ( Sint64  boundary1,
Sint64  boundary2,
SDL_bool  validDomain 
)

Returns a random boundary value for Sint64 within the given boundaries. Boundaries are inclusive, see the usage examples below. If validDomain is true, the function will only return valid boundaries, otherwise non-valid boundaries are also possible. If boundary1 > boundary2, the values are swapped

Usage examples: RandomSint64BoundaryValue(-10, 20, SDL_TRUE) returns -11, -10, 19 or 20 RandomSint64BoundaryValue(-100, -10, SDL_FALSE) returns -101 or -9 RandomSint64BoundaryValue(SINT64_MIN, 99, SDL_FALSE) returns 100 RandomSint64BoundaryValue(SINT64_MIN, SINT64_MAX, SDL_FALSE) returns SINT64_MIN (== error value) and error set

Parameters
boundary1Lower boundary limit
boundary2Upper boundary limit
validDomainShould the generated boundary be valid (=within the bounds) or not?
Returns
Random boundary value for the given range and domain or SINT64_MIN with error set

Definition at line 441 of file SDL_test_fuzzer.c.

442 {
443  /* min & max values for Sint64 */
444  const Sint64 maxValue = INT64_MAX;
445  const Sint64 minValue = INT64_MIN;
446  return SDLTest_GenerateSignedBoundaryValues(minValue, maxValue,
447  boundary1, boundary2,
448  validDomain);
449 }

References SDLTest_GenerateSignedBoundaryValues().

Referenced by sdltest_randomBoundaryNumberSint64().

◆ SDLTest_RandomSint8()

Sint8 SDLTest_RandomSint8 ( void  )

Returns a random Sint8

Returns
Generated signed integer

Definition at line 87 of file SDL_test_fuzzer.c.

88 {
90 
91  return (Sint8) SDLTest_RandomInt(&rndContext) & 0x000000FF;
92 }

References fuzzerInvocationCounter, rndContext, and SDLTest_RandomInt.

Referenced by sdltest_randomNumber().

◆ SDLTest_RandomSint8BoundaryValue()

Sint8 SDLTest_RandomSint8BoundaryValue ( Sint8  boundary1,
Sint8  boundary2,
SDL_bool  validDomain 
)

Returns a random boundary value for Sint8 within the given boundaries. Boundaries are inclusive, see the usage examples below. If validDomain is true, the function will only return valid boundaries, otherwise non-valid boundaries are also possible. If boundary1 > boundary2, the values are swapped

Usage examples: RandomSint8BoundaryValue(-10, 20, SDL_TRUE) returns -11, -10, 19 or 20 RandomSint8BoundaryValue(-100, -10, SDL_FALSE) returns -101 or -9 RandomSint8BoundaryValue(SINT8_MIN, 99, SDL_FALSE) returns 100 RandomSint8BoundaryValue(SINT8_MIN, SINT8_MAX, SDL_FALSE) returns SINT8_MIN (== error value) with error set

Parameters
boundary1Lower boundary limit
boundary2Upper boundary limit
validDomainShould the generated boundary be valid (=within the bounds) or not?
Returns
Random boundary value for the given range and domain or SINT8_MIN with error set

Definition at line 403 of file SDL_test_fuzzer.c.

404 {
405  /* min & max values for Sint8 */
406  const Sint64 maxValue = SCHAR_MAX;
407  const Sint64 minValue = SCHAR_MIN;
408  return (Sint8)SDLTest_GenerateSignedBoundaryValues(minValue, maxValue,
409  (Sint64) boundary1, (Sint64) boundary2,
410  validDomain);
411 }

References SDLTest_GenerateSignedBoundaryValues().

Referenced by sdltest_randomBoundaryNumberSint8().

◆ SDLTest_RandomUint16()

Uint16 SDLTest_RandomUint16 ( void  )

Returns a random Uint16

Returns
Generated integer

Definition at line 95 of file SDL_test_fuzzer.c.

96 {
98 
99  return (Uint16) SDLTest_RandomInt(&rndContext) & 0x0000FFFF;
100 }

References fuzzerInvocationCounter, rndContext, and SDLTest_RandomInt.

Referenced by rwops_testFileWriteReadEndian(), and sdltest_randomNumber().

◆ SDLTest_RandomUint16BoundaryValue()

Uint16 SDLTest_RandomUint16BoundaryValue ( Uint16  boundary1,
Uint16  boundary2,
SDL_bool  validDomain 
)

Returns a random boundary value for Uint16 within the given boundaries. Boundaries are inclusive, see the usage examples below. If validDomain is true, the function will only return valid boundaries, otherwise non-valid boundaries are also possible. If boundary1 > boundary2, the values are swapped

Usage examples: RandomUint16BoundaryValue(10, 20, SDL_TRUE) returns 10, 11, 19 or 20 RandomUint16BoundaryValue(1, 20, SDL_FALSE) returns 0 or 21 RandomUint16BoundaryValue(0, 99, SDL_FALSE) returns 100 RandomUint16BoundaryValue(0, 0xFFFF, SDL_FALSE) returns 0 (error set)

Parameters
boundary1Lower boundary limit
boundary2Upper boundary limit
validDomainShould the generated boundary be valid (=within the bounds) or not?
Returns
Random boundary value for the given range and domain or 0 with error set

Definition at line 281 of file SDL_test_fuzzer.c.

282 {
283  /* max value for Uint16 */
284  const Uint64 maxValue = USHRT_MAX;
286  (Uint64) boundary1, (Uint64) boundary2,
287  validDomain);
288 }

References SDLTest_GenerateUnsignedBoundaryValues().

Referenced by sdltest_randomBoundaryNumberUint16().

◆ SDLTest_RandomUint32()

Uint32 SDLTest_RandomUint32 ( void  )

Returns a random positive integer

Returns
Generated integer

Definition at line 119 of file SDL_test_fuzzer.c.

120 {
122 
124 }

References fuzzerInvocationCounter, rndContext, and SDLTest_RandomInt.

Referenced by rwops_testFileWriteReadEndian(), SDLTest_RandomAsciiStringWithMaximumLength(), SDLTest_RandomIntegerInRange(), sdltest_randomNumber(), and SDLTest_RandomUnitFloat().

◆ SDLTest_RandomUint32BoundaryValue()

Uint32 SDLTest_RandomUint32BoundaryValue ( Uint32  boundary1,
Uint32  boundary2,
SDL_bool  validDomain 
)

Returns a random boundary value for Uint32 within the given boundaries. Boundaries are inclusive, see the usage examples below. If validDomain is true, the function will only return valid boundaries, otherwise non-valid boundaries are also possible. If boundary1 > boundary2, the values are swapped

Usage examples: RandomUint32BoundaryValue(10, 20, SDL_TRUE) returns 10, 11, 19 or 20 RandomUint32BoundaryValue(1, 20, SDL_FALSE) returns 0 or 21 RandomUint32BoundaryValue(0, 99, SDL_FALSE) returns 100 RandomUint32BoundaryValue(0, 0xFFFFFFFF, SDL_FALSE) returns 0 (with error set)

Parameters
boundary1Lower boundary limit
boundary2Upper boundary limit
validDomainShould the generated boundary be valid (=within the bounds) or not?
Returns
Random boundary value for the given range and domain or 0 with error set

Definition at line 291 of file SDL_test_fuzzer.c.

292 {
293  /* max value for Uint32 */
294  #if ((ULONG_MAX) == (UINT_MAX))
295  const Uint64 maxValue = ULONG_MAX;
296  #else
297  const Uint64 maxValue = UINT_MAX;
298  #endif
300  (Uint64) boundary1, (Uint64) boundary2,
301  validDomain);
302 }

References SDLTest_GenerateUnsignedBoundaryValues().

Referenced by sdltest_randomBoundaryNumberUint32().

◆ SDLTest_RandomUint64()

Uint64 SDLTest_RandomUint64 ( void  )

Returns random Uint64.

Returns
Generated integer

Definition at line 127 of file SDL_test_fuzzer.c.

128 {
129  union {
130  Uint64 v64;
131  Uint32 v32[2];
132  } value;
133  value.v64 = 0;
134 
136 
137  value.v32[0] = SDLTest_RandomSint32();
138  value.v32[1] = SDLTest_RandomSint32();
139 
140  return value.v64;
141 }

References fuzzerInvocationCounter, and SDLTest_RandomSint32().

Referenced by rwops_testFileWriteReadEndian(), sdltest_randomNumber(), and SDLTest_RandomUnitDouble().

◆ SDLTest_RandomUint64BoundaryValue()

Uint64 SDLTest_RandomUint64BoundaryValue ( Uint64  boundary1,
Uint64  boundary2,
SDL_bool  validDomain 
)

Returns a random boundary value for Uint64 within the given boundaries. Boundaries are inclusive, see the usage examples below. If validDomain is true, the function will only return valid boundaries, otherwise non-valid boundaries are also possible. If boundary1 > boundary2, the values are swapped

Usage examples: RandomUint64BoundaryValue(10, 20, SDL_TRUE) returns 10, 11, 19 or 20 RandomUint64BoundaryValue(1, 20, SDL_FALSE) returns 0 or 21 RandomUint64BoundaryValue(0, 99, SDL_FALSE) returns 100 RandomUint64BoundaryValue(0, 0xFFFFFFFFFFFFFFFF, SDL_FALSE) returns 0 (with error set)

Parameters
boundary1Lower boundary limit
boundary2Upper boundary limit
validDomainShould the generated boundary be valid (=within the bounds) or not?
Returns
Random boundary value for the given range and domain or 0 with error set

Definition at line 305 of file SDL_test_fuzzer.c.

306 {
307  /* max value for Uint64 */
308  const Uint64 maxValue = UINT64_MAX;
310  (Uint64) boundary1, (Uint64) boundary2,
311  validDomain);
312 }

References SDLTest_GenerateUnsignedBoundaryValues(), and UINT64_MAX.

Referenced by sdltest_randomBoundaryNumberUint64().

◆ SDLTest_RandomUint8()

◆ SDLTest_RandomUint8BoundaryValue()

Uint8 SDLTest_RandomUint8BoundaryValue ( Uint8  boundary1,
Uint8  boundary2,
SDL_bool  validDomain 
)

Returns a random boundary value for Uint8 within the given boundaries. Boundaries are inclusive, see the usage examples below. If validDomain is true, the function will only return valid boundaries, otherwise non-valid boundaries are also possible. If boundary1 > boundary2, the values are swapped

Usage examples: RandomUint8BoundaryValue(10, 20, SDL_TRUE) returns 10, 11, 19 or 20 RandomUint8BoundaryValue(1, 20, SDL_FALSE) returns 0 or 21 RandomUint8BoundaryValue(0, 99, SDL_FALSE) returns 100 RandomUint8BoundaryValue(0, 255, SDL_FALSE) returns 0 (error set)

Parameters
boundary1Lower boundary limit
boundary2Upper boundary limit
validDomainShould the generated boundary be valid (=within the bounds) or not?
Returns
Random boundary value for the given range and domain or 0 with error set

Definition at line 271 of file SDL_test_fuzzer.c.

272 {
273  /* max value for Uint8 */
274  const Uint64 maxValue = UCHAR_MAX;
276  (Uint64) boundary1, (Uint64) boundary2,
277  validDomain);
278 }

References SDLTest_GenerateUnsignedBoundaryValues().

Referenced by sdltest_randomBoundaryNumberUint8().

◆ SDLTest_RandomUnitDouble()

double SDLTest_RandomUnitDouble ( void  )
Returns
random double in range [0.0 - 1.0[

Definition at line 464 of file SDL_test_fuzzer.c.

465 {
466  return (double) (SDLTest_RandomUint64() >> 11) * (1.0/9007199254740992.0);
467 }

References SDLTest_RandomUint64().

Referenced by SDLTest_RandomFloat(), and sdltest_randomNumber().

◆ SDLTest_RandomUnitFloat()

float SDLTest_RandomUnitFloat ( void  )
Returns
random float in range [0.0 - 1.0[

Definition at line 452 of file SDL_test_fuzzer.c.

453 {
454  return SDLTest_RandomUint32() / (float) UINT_MAX;
455 }

References SDLTest_RandomUint32().

Referenced by pixels_calcGammaRamp(), and sdltest_randomNumber().

Variable Documentation

◆ fuzzerInvocationCounter

◆ rndContext

SDL_memset
#define SDL_memset
Definition: SDL_dynapi_overrides.h:386
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
Sint32
int32_t Sint32
Definition: SDL_stdinc.h:197
Sint64
int64_t Sint64
Definition: SDL_stdinc.h:210
SDLTest_GenerateSignedBoundaryValues
static Sint64 SDLTest_GenerateSignedBoundaryValues(const Sint64 minValue, const Sint64 maxValue, Sint64 boundary1, Sint64 boundary2, SDL_bool validDomain)
Definition: SDL_test_fuzzer.c:340
NULL
#define NULL
Definition: begin_code.h:167
b
GLboolean GLboolean GLboolean b
Definition: SDL_opengl_glext.h:1109
SDLTest_RandomUnitDouble
double SDLTest_RandomUnitDouble()
Definition: SDL_test_fuzzer.c:464
SDLTest_RandomAsciiStringOfSize
char * SDLTest_RandomAsciiStringOfSize(int size)
Definition: SDL_test_fuzzer.c:507
r
GLdouble GLdouble GLdouble r
Definition: SDL_opengl.h:2079
SDL_InvalidParamError
#define SDL_InvalidParamError(param)
Definition: SDL_error.h:54
SDLTest_RandomSint32
Sint32 SDLTest_RandomSint32()
Definition: SDL_test_fuzzer.c:111
rndContext
static SDLTest_RandomContext rndContext
Definition: SDL_test_fuzzer.c:56
SDLTest_RandomContext
Definition: SDL_test_random.h:59
index
GLuint index
Definition: SDL_opengl_glext.h:660
a
GLboolean GLboolean GLboolean GLboolean a
Definition: SDL_opengl_glext.h:1109
SDLTest_GenerateUnsignedBoundaryValues
static Uint64 SDLTest_GenerateUnsignedBoundaryValues(const Uint64 maxValue, Uint64 boundary1, Uint64 boundary2, SDL_bool validDomain)
Definition: SDL_test_fuzzer.c:208
Sint16
int16_t Sint16
Definition: SDL_stdinc.h:185
counter
GLuint counter
Definition: SDL_opengl_glext.h:4992
fuzzerInvocationCounter
static int fuzzerInvocationCounter
Definition: SDL_test_fuzzer.c:51
SDLTest_RandomInt
#define SDLTest_RandomInt(c)
Definition: SDL_test_random.h:54
Uint16
uint16_t Uint16
Definition: SDL_stdinc.h:191
SDLTest_RandomUint32
Uint32 SDLTest_RandomUint32()
Definition: SDL_test_fuzzer.c:119
UINT64_MAX
#define UINT64_MAX
Definition: testvulkan.c:39
size
GLsizeiptr size
Definition: SDL_opengl_glext.h:537
SDL_TRUE
@ SDL_TRUE
Definition: SDL_stdinc.h:164
SDLTest_RandomInit
void SDLTest_RandomInit(SDLTest_RandomContext *rndContext, unsigned int xi, unsigned int ci)
Initialize random number generator with two integers.
Definition: SDL_test_random.c:41
INT_MAX
#define INT_MAX
Definition: SDL_wave.c:31
value
GLsizei const GLfloat * value
Definition: SDL_opengl_glext.h:698
s
GLdouble s
Definition: SDL_opengl.h:2063
SDLTest_RandomUint8
Uint8 SDLTest_RandomUint8()
Definition: SDL_test_fuzzer.c:79
Uint64
uint64_t Uint64
Definition: SDL_stdinc.h:216
SDLTest_RandomUint64
Uint64 SDLTest_RandomUint64()
Definition: SDL_test_fuzzer.c:127
SDL_Unsupported
#define SDL_Unsupported()
Definition: SDL_error.h:53
string
GLsizei const GLchar *const * string
Definition: SDL_opengl_glext.h:688
SDL_malloc
#define SDL_malloc
Definition: SDL_dynapi_overrides.h:374
Sint8
int8_t Sint8
Definition: SDL_stdinc.h:173
maxLength
GLsizei maxLength
Definition: SDL_opengl_glext.h:3644
SDLTest_RandomIntegerInRange
Sint32 SDLTest_RandomIntegerInRange(Sint32 pMin, Sint32 pMax)
Definition: SDL_test_fuzzer.c:163
SDLTest_RandomAsciiStringWithMaximumLength
char * SDLTest_RandomAsciiStringWithMaximumLength(int maxLength)
Definition: SDL_test_fuzzer.c:492
Uint8
uint8_t Uint8
Definition: SDL_stdinc.h:179