asum

Takes the sum of the |Re(.)| + |Im(.)|'s of a vector and returns a single precision result.

F asum(Slice!(Iterator, N, kind) x)
@fastmath
F
asum
(
F
SliceKind kind
size_t N
Iterator
)
(
Slice!(Iterator, N, kind) x
)
auto asum(Slice!(Iterator, N, kind) x)

Parameters

F: type for summation (optional template parameter)
x Slice!(Iterator, N, kind): n-dimensional tensor BLAS: SASUM, DASUM, SCASUM, DZASUM

Return Value

Type: F

sum of the |Re(.)| + |Im(.)|'s

Examples

SASUM, DASUM

import mir.ndslice.allocation: slice;
auto x = slice!double(4);
x[] = [0, -1, -2, 3];
assert(asum(x) == 1 + 2 + 3);

SCASUM, DZASUM

import mir.ndslice.allocation: slice;

auto x = slice!cdouble(2);
x[] = [0 - 1i, -2 + 3i];

assert(asum(x) == 1 + 2 + 3);

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mir glas l1 functions

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