1 // This file was extracted from the TCG Published 2 // Trusted Platform Module Library 3 // Part 4: Supporting Routines 4 // Family "2.0" 5 // Level 00 Revision 01.16 6 // October 30, 2014 7 8 #include "InternalRoutines.h" 9 // 10 // 11 // Functions 12 // 13 // BitIsSet() 14 // 15 // This function is used to check the setting of a bit in an array of bits. 16 // 17 // Return Value Meaning 18 // 19 // TRUE bit is set 20 // FALSE bit is not set 21 // 22 BOOL 23 BitIsSet( 24 unsigned int bitNum, // IN: number of the bit in 'bArray' 25 BYTE *bArray, // IN: array containing the bit 26 unsigned int arraySize // IN: size in bytes of 'bArray' 27 ) 28 { 29 pAssert(arraySize > (bitNum >> 3)); 30 return((bArray[bitNum >> 3] & (1 << (bitNum & 7))) != 0); 31 } 32 // 33 // 34 // BitSet() 35 // 36 // This function will set the indicated bit in bArray. 37 // 38 void 39 BitSet( 40 unsigned int bitNum, // IN: number of the bit in 'bArray' 41 BYTE *bArray, // IN: array containing the bit 42 unsigned int arraySize // IN: size in bytes of 'bArray' 43 ) 44 { 45 pAssert(arraySize > bitNum/8); 46 bArray[bitNum >> 3] |= (1 << (bitNum & 7)); 47 } 48 // 49 // 50 // BitClear() 51 // 52 // This function will clear the indicated bit in bArray. 53 // 54 void 55 BitClear( 56 unsigned int bitNum, // IN: number of the bit in 'bArray'. 57 BYTE *bArray, // IN: array containing the bit 58 unsigned int arraySize // IN: size in bytes of 'bArray' 59 ) 60 { 61 pAssert(arraySize > bitNum/8); 62 bArray[bitNum >> 3] &= ~(1 << (bitNum & 7)); 63 } 64
