ieeePrecision

Tests the precision of floating-point type F.

For $(D_KEYWORD float) $(D_PSYMBOL ieeePrecision) always evaluates to IEEEPrecision.single; for $(D_KEYWORD double) - to IEEEPrecision.double. It returns different values only for $(D_KEYWORD real), since $(D_KEYWORD real) is a platform-dependent type.

If F is a $(D_KEYWORD real) and the target platform isn't currently supported, static assertion error will be raised (you can use is(typeof(ieeePrecision!F)) for testing the platform support without a compilation error).

template ieeePrecision (

) if (

isFloatingPoint!F

) {

static if(F.sizeof == float.sizeof)

enum IEEEPrecision ieeePrecision;

static if(!(F.sizeof == float.sizeof))

static if(F.sizeof == double.sizeof)

enum IEEEPrecision ieeePrecision;

version(X86)

static if(!(F.sizeof == float.sizeof))

static if(!(F.sizeof == double.sizeof))

enum IEEEPrecision ieeePrecision;

version(!X86 && X86_64)

static if(!(F.sizeof == float.sizeof))

static if(!(F.sizeof == double.sizeof))

enum IEEEPrecision ieeePrecision;

}

Members

Variables

ieeePrecision enum IEEEPrecision ieeePrecision;: Undocumented in source.
ieeePrecision enum IEEEPrecision ieeePrecision;: Undocumented in source.
ieeePrecision enum IEEEPrecision ieeePrecision;: Undocumented in source.
ieeePrecision enum IEEEPrecision ieeePrecision;: Undocumented in source.

Parameters

F: Type to be tested.

Return Value

Precision according to IEEE-754.

Examples

static assert(ieeePrecision!float == IEEEPrecision.single);
static assert(ieeePrecision!double == IEEEPrecision.double_);

ieeePrecision

Members

Variables

Parameters

Return Value

Examples

See Also

Meta

Source