Comparison of 32-Bit and 64-Bit
Environments
The following table shows a comparison of the 32-bit and 64-bit operating environments. These
items are described in greater detail in the following sections.
Table 1 Comparison of 32-bit and 64-bit Operating Environments
|
32-bit (ILP 32) |
64-bit (LP64) |
-xarch on SPARC
platforms |
sparcvis, sparcvis2, sparcfmaf |
sparcvis, sparcvis2, sparcfmaf |
-xarch on x86
platforms |
generic, sse2 |
sse2 |
addressing |
-m32 |
-m64 |
Fortran Integers |
INTEGER, INTEGER*4 |
INTEGER*8 |
C Integers |
int |
long |
Floating-point |
S/D/C/Z |
S/D/C/Z |
API |
Names of routines |
Names of routines with _64 suffix |
|