Hiword

Home › Bit Manipulation › HiWord

HiWord

Returns bits 16 to 31 of a number.

Syntax

#define HiWord( expr ) ((Cast(UInteger, expr) and &hFFFF0000) Shr 16)

Parameters

• expr

Description

This macro converts the numeric expression expr to an UInteger value, then expands to an UInteger representing the value of its second 16bit word - that is the most-significant (high) 16bit word of the least-significant (low) 32bit dword of expr.

Return Value

Returns the value of the high 16bit word of the low 32bit dword of expr.

Remarks

Usage

result = HiWord( expr )

Dialect Differences

• Not available in the -lang qb dialect unless referenced with the alias __HIWORD.

Differences from QB

• New to FreeBASIC

See also

• LoByte
• HiByte
• LoWord

Examples

Dim N As UInteger

'Note there are 32 bits

N = &b10000000000000011111111111111111

Print "N is                                       "; N

Print "The binary representation of N is          "; Bin(N)

Print "The most significant word (MSW) of N is    "; HiWord(N)

Print "The least significant word (LSW) of N is   "; LoWord(N)

Print "The binary representation of the MSW is    "; Bin(HiWord(N))

Print "The binary representation of the LSW is    "; Bin(LoWord(N))

Sleep

The output would look like:

N Is                                       2147614719
The Binary representation of N Is          10000000000000011111111111111111
The most significant word (MSW) of N Is    32769
The least significant word (LSW) of N Is   65535
The Binary representation of the MSW Is    1000000000000001
The Binary representation of the LSW Is    1111111111111111

---

Category: Bit Manipulation
Kind: keyword

---

Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.