Moves LEN bits from positions FROMPOS through FROMPOS+LEN-1 of FROM to positions TOPOS through TOPOS+LEN-1 of TO. The portion of argument TO not affected by the movement of bits is unchanged. The values of FROMPOS+LEN-1 and TOPOS+LEN-1 must be less than BIT_SIZE(FROM).
Fortran 90 and later, has overloads that are GNU extensions
Elemental subroutine
CALL MVBITS(FROM, FROMPOS, LEN, TO, TOPOS)
| FROM | The type shall be INTEGER. |
| FROMPOS | The type shall be INTEGER. |
| LEN | The type shall be INTEGER. |
| TO | The type shall be INTEGER, of the same kind as FROM. |
| TOPOS | The type shall be INTEGER. |
| Name | Argument | Return type | Standard |
|---|---|---|---|
MVBITS(A) |
INTEGER A |
INTEGER |
Fortran 90 and later |
BMVBITS(A) |
INTEGER(1) A |
INTEGER(1) |
GNU extension |
IMVBITS(A) |
INTEGER(2) A |
INTEGER(2) |
GNU extension |
JMVBITS(A) |
INTEGER(4) A |
INTEGER(4) |
GNU extension |
KMVBITS(A) |
INTEGER(8) A |
INTEGER(8) |
GNU extension |
IBCLR — Clear bit, IBSET — Set bit, IBITS — Bit extraction, IAND — Bitwise logical and, IOR — Bitwise logical or, IEOR — Bitwise logical exclusive or
© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gfortran/MVBITS.html