Technical data

Predefined Macros [7]

_CRAYMPP Defined as 1 on all UNICOS/mk systems. If the

hardware is any other machine type, the macro

is not defined.

_CRAYSV1 Defined as 1 on all Cray SV1 series systems. If

the hardware is any other machine type, the

macro is not defined.

_CRAYT3E Defined as 1 on Cray T3E systems; if the hardware

is any other machine type, the macro is not

defined.

_CRAYIEEE Defined as 1 if the targeted CPU type uses IEEE

floating-point format; if Cray floating-point format

is used, the macro is not defined.

_ADDR32 Defined as 1 if the targeted CPU has 32-bit address

registers; if the targeted CPU does not have 32–bit

address registers, the macro is not defined.

_ADDR64 Defined as 1 if the targeted CPU has 64-bit address

registers; if the targeted CPU does not have 64–bit

address registers, the macro is not defined.

_LD64 Defined as 1 if the long double basic type has 64

bits of precision; if 128-bit precision is used, the

macro is not defined.

_FASTMD Defined as 1 if the fast multiply/divide sequence

is enabled; if the machine type is UNICOS/mk

or if fast multiply/divide is not used, the macro

is not defined.

_MAXVL Defined as the maximum hardware vector length

(64 or 128); if the machine type is UNICOS/mk,

the macro is not defined.

7.4 Macros Based on the Compiler

The following macros provide information about compiler features:

acro Description

_RELEASE Defined as the major release level of the compiler.

_CRAYC Defined as 1 to identify the Cray Standard C/C++

compilers.

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