c++ - C++11 : Does new return contiguous memory? - 


float* tempbuf = new float[maxvoices]();

will above result in

1) memory 16-byte aligned?

2) memory confirmed contiguous?

what want following: 

float tempbuf[maxvoices] __attribute__ ((aligned));

but heap memory, effective apple accelerate framework.

thanks.

the memory aligned float, not cpu-specific simd instructions. suspect on system sizeof(float) < 16, though, means it's not aligned want. memory contiguous: &a[i] == &a[0] + i.

if need more specific, new std::aligned_storage<length, alignment> return suitable region of memory, presuming of course did in fact pass more specific alignment.

another alternative struct fourfloats alignas(16) {float[4] floats;}; - may map more naturally framework. you'd need new fourfloats[(maxvoices+3)/4].


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