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Copyright ©1994 by Christopher Wolf ($Id: SCSI2KitFunctions.rtf,v 0.2 94/10/10 16:16:10 chris Exp Locker: chris $) S2K_ReadBigEndianLong(), S2K_ReadBigEndianShort(), S2K_ReadBigEndianValue() SUMMARY Read a big-endian integer value DECLARED IN SCSI2_Kit/SCSI2_Class/SCSI.h SYNOPSIS int S2K_ReadBigEndianLong(void *address) int S2K_ReadBigEndianShort(void *address) int S2K_ReadBigEndianValue(void *address, int numBits) DESCRIPTION Use this function to read an integer value stored in big-endian (MSB first) order from the specified address and return the value as an bit integer in native byte format. This function should always be used when reading multi-byte fields in SCSI structures to insure that your code will work on both big-endian (Motorola) and little-endian (Intel) machines. The S2K_ReadBigEndianLong function reads a 32 bit value from address. The S2K_ReadBigEndianShort function reads a 16 bit value from address. The S2K_ReadBigEndianValue reads a value from address whose length, from 1-32 bits, is specifed in numBits. Note that the return value, in native byte order, is always cast to a 32 bit integer even if the value being read is fewer bits. RETURN A 32 bit native byte-order integer value equal to the bit big-endian integer value stored at the indicated address. S2K_WriteBigEndianLong,S2K_WriteBigEndianShort(),S2K_WriteBigEndianValue() SUMMARY Write a big-endian integer value DECLARED IN SCSI2_Kit/SCSI2_Class/SCSI.h SYNOPSIS void S2K_WriteBigEndianLong(int value, void *address) void S2K_WriteBigEndianShort(int value, void *address) void S2K_WriteBigEndianValue(int value, void *address, int numBits) DESCRIPTION Use this function to store a value as a big-endian (MSB first) integer at the specified address. This function should always be used when writing multi-byte integer fields in SCSI structures to insure that your code will work on both big-endian (Motorola) and little-endian (Intel) machines. The S2K_WriteBigEndianLong function writes to a 32 bit value to address. The S2K_WriteBigEndianShort function write a 16 bit value to address. The S2K_WriteBigEndianValue writes a value to address whose length, from 1-32 bits, is specifed in numBits. Note that the specified value, in native byte order, must always be passed as a 32 bit integer even if the destination big endian value is being stored in fewer bits. RETURN This function does not return any value.
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