quantize

Round val to a multiple of unit. rfunc specifies the rounding function to use; by default this is rint, which uses the current rounding mode.

Unqual!F quantize(F val, F unit)
Unqual!F
quantize
(
alias rfunc = rint
F
)
(
const F val
,
const F unit
)
if (
is(typeof(rfunc(F.init)) : F) &&
isFloatingPoint!F
)
Unqual!F quantize(F val, E exp)
Unqual!F quantize(F val)

Examples

assert(12345.6789L.quantize(0.01L) == 12345.68L);
assert(12345.6789L.quantize!floor(0.01L) == 12345.67L);
assert(12345.6789L.quantize(22.0L) == 12342.0L);

assert(12345.6789L.quantize(0) == 12345.6789L);
assert(12345.6789L.quantize(real.infinity).isNaN);
assert(12345.6789L.quantize(real.nan).isNaN);
assert(real.infinity.quantize(0.01L) == real.infinity);
assert(real.infinity.quantize(real.nan).isNaN);
assert(real.nan.quantize(0.01L).isNaN);
assert(real.nan.quantize(real.infinity).isNaN);
assert(real.nan.quantize(real.nan).isNaN);

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