simdpp::fmsub(floatint-point)

 

libsimdpp

Types

Capabilities

Operations

Conversions

Bitwise operations

Floating-point operations

Integer operations

Memory access operations

Shuffle operations

Miscellaneous operations

 

Floating-point operations

Elementary operations
add sub	mul div	fmadd fmsub	neg
Rounding
round ceil	floor trunc
Comparisons
cmp_eq cmp_neq	cmp_lt cmp_le	cmp_gt cmp_ge
Reduction
reduce_add reduce_min	reduce_mul reduce_max
Miscellaneous
abs sign	min max	isnan isnan2
Square root and reciprocal
sqrt	rcp_e rcp_rh	rsqrt_e rsqrt_rh

 

template<unsigned N, class E1, class E2, class E3> Ret<N, _DETAIL_> fmsub( Vec1<N,E1> a, Vec2<N,E2> b, Vec3<N,E3> );

Performs a fused multiply-subtract operation of floating-point in three vectors, as if by a*b-c for each element. The implementation behaves as if the following set of overloads is provided:

Ret	Vec1	Vec2	Vec3
float32	float32	float32	float32
float64	float64	float64	float64

The return type is a vector expression.

Parameters

a, b, c

-

floating-point vectors

Return value

A vector expression evaluating to a * b - c.

Equivalent operation

r0 = a0 * b0 - c0
 ...
rN = aN * bN - cN