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move randomBoolean and randomColorValue methods to SharedUtil

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This commit is contained in:
Stephen Birarda 2013-03-19 15:49:12 -07:00
parent c7213d6593
commit 482e65c296
2 changed files with 33 additions and 3 deletions
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28
shared/src/SharedUtil.cpp
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@ -24,7 +24,16 @@ float randFloat () {
return (rand() % 10000)/10000.f;
}
void outputBits(char byte) {
unsigned char randomColorValue(uint8_t miniumum) {
return miniumum + (rand() % (255 - miniumum));
}
bool randomBoolean() {
return rand() % 2;
}
void outputBits(unsigned char byte) {
printf("%d: ", byte);
for (int i = 0; i < 8; i++) {
@ -32,4 +41,19 @@ void outputBits(char byte) {
}
printf("\n");
}
}
int8_t numberOfOnes(unsigned char byte) {
return (byte >> 7)
+ ((byte >> 6) & 1)
+ ((byte >> 5) & 1)
+ ((byte >> 4) & 1)
+ ((byte >> 3) & 1)
+ ((byte >> 2) & 1)
+ ((byte >> 1) & 1)
+ (byte & 1);
}
bool oneAtBit(unsigned char byte, int8_t bitIndex) {
return (byte >> (7 - bitIndex) & 1);
}

8
shared/src/SharedUtil.h
View file

@ -19,7 +19,13 @@
double usecTimestamp(timeval *time);
double usecTimestampNow();
float randFloat();
void outputBits(char);
unsigned char randomColorValue(uint8_t minimum);
bool randomBoolean();
void outputBits(unsigned char byte);
int8_t numberOfOnes(unsigned char byte);
bool oneAtBit(unsigned char byte, int8_t bitIndex);
#endif /* defined(__hifi__SharedUtil__) */