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}
#define SDL_memset
GLboolean GLboolean GLboolean b
GLboolean GLboolean GLboolean GLboolean a
uint32_t Uint32
Definition: SDL_stdinc.h:203
static SDLTest_RandomContext rndContext
static int fuzzerInvocationCounter
void SDLTest_RandomInit(SDLTest_RandomContext *rndContext, unsigned int xi, unsigned int ci)
Initialize random number generator with two integers.

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 */
395 return minValue;
396 }
397
398 return tempBuf[SDLTest_RandomUint8() % index];
399}
#define SDL_Unsupported()
Definition: SDL_error.h:53
GLuint index
@ SDL_TRUE
Definition: SDL_stdinc.h:164
uint8_t Uint8
Definition: SDL_stdinc.h:179
int64_t Sint64
Definition: SDL_stdinc.h:210
Uint8 SDLTest_RandomUint8()

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 */
263 return 0;
264 }
265
266 return tempBuf[SDLTest_RandomUint8() % index];
267}
uint64_t Uint64
Definition: SDL_stdinc.h:216

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}
char * SDLTest_RandomAsciiStringWithMaximumLength(int maxLength)

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}
#define SDL_malloc
#define SDL_InvalidParamError(param)
Definition: SDL_error.h:54
GLsizeiptr size
GLsizei const GLchar *const * string
GLuint counter
Sint32 SDLTest_RandomIntegerInRange(Sint32 pMin, Sint32 pMax)
#define NULL
Definition: begin_code.h:167

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}
GLsizei maxLength
Uint32 SDLTest_RandomUint32()
char * SDLTest_RandomAsciiStringOfSize(int size)

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}
GLdouble GLdouble GLdouble r
Definition: SDL_opengl.h:2079
GLdouble s
Definition: SDL_opengl.h:2063
#define SDLTest_RandomInt(c)

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}
double SDLTest_RandomUnitDouble()

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}
int32_t Sint32
Definition: SDL_stdinc.h:197

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}
int16_t Sint16
Definition: SDL_stdinc.h:185

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

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}
#define INT_MAX
Definition: SDL_wave.c:31

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}
GLsizei const GLfloat * value
Sint32 SDLTest_RandomSint32()

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}
int8_t Sint8
Definition: SDL_stdinc.h:173

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}
uint16_t Uint16
Definition: SDL_stdinc.h:191

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

References SDLTest_GenerateUnsignedBoundaryValues().

Referenced by sdltest_randomBoundaryNumberUint16().

◆ SDLTest_RandomUint32()

Uint32 SDLTest_RandomUint32 ( void  )

◆ 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}
#define UINT64_MAX
Definition: testvulkan.c:39

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}
Uint64 SDLTest_RandomUint64()

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