simdpp::mul_hi(integer)

 

libsimdpp

Types

Operations

Bitwise operations

Floating-point operations

Integer operations

Memory access operations

Shuffle operations

Miscellaneous operations

 

Integer operations

Elementary operations
add add_sat	sub sub_sat	mul_lo mul_hi mull	neg
Comparisons
cmp_eq cmp_neq	cmp_lt cmp_gt
Reduction
reduce_add reduce_min reduce_and	reduce_mul reduce_max reduce_or
Miscellaneous
abs avg avg_trunc	min max	shift_l shift_r

 

template<unsigned N, class E1, class E2> Ret<N, _DETAIL_> mul_hi( Vec1<N,E1> a, Vec2<N,E2> b );

Multiplies two vectors with integer values and returns the higher part of the result. The implementation behaves as if the following set of overloads is provided:

Ret	Vec1	Vec2
int16	int16	int16
uint16	uint16	uint16

The return type is a vector expression.

Scalar arguments

Several additional overloads are provided to implement implicit conversions from scalar types. Values of the following types are accepted as the first or the second argument: int32_t, int64_t, uint32_t, uint64_t, float, double. Each element of the expanded vector is set to the source value, converting it using standard conversions if needed.

The return type is a vector expression. The vector type is the same as the vector argument except that masks are unmasked to respective non-mask vector types.

Parameters

a, b

-

integer vectors

Return value

A vector expression evaluating to (a * b) >> half_bits.

Equivalent operation

r0 = (a0 * b0) >> half_bits
...
rN = (aN * bN) >> half_bits