Viewing file:  vec-copysign-execute.c (1.65 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-options "-O2 -ftree-vectorize -mzarch -march=z13" } */
#include <math.h>
#include <assert.h>
#define N 20
double a[N] = {-0.1, -3.2, -6.3, -9.4, -12.5, -15.6, -18.7, -21.8, 24.9,
27.1, 30.2, 33.3, 36.4, 39.5, 42.6, nan("123"), __DBL_MIN__ / 2.0,
-nan ("1"), __DBL_MAX__ * 2.0, -__DBL_MAX__ * 1e199};
double b[N] = {-1.2, 3.4, -5.6, 7.8, -9.0, 1.0, -2.0, 3.0, -4.0, -5.0, 6.0,
7.0, -8.0, -9.0, 10.0, -11.0, -1., 0., -0., 1.3};
double r[N];
double r2[N];
void
foo (void)
{
for (int i = 0; i < N; i++)
r[i] = copysign (a[i], b[i]);
}
__attribute__((optimize("no-tree-vectorize")))
void
check (void)
{
for (int i = 0; i < N; i++)
{
r2[i] = copysign (a[i], b[i]);
assert (r[i] == r2[i]
|| (isnan (r[i]) && isnan (r2[i])
&& signbit (r[i]) == signbit (r2[i])));
}
}
float af[N] = {-0.1, -3.2, -6.3, -9.4, -12.5, -15.6, -18.7, -21.8, 24.9,
27.1, 30.2, 33.3, 36.4, 39.5, 42.6, nan("123"), __DBL_MIN__ / 2.0,
-nan ("1"), __DBL_MAX__ * 2.0, -__DBL_MAX__ * 1e199};
float bf[N] = {-1.2, 3.4, -5.6, 7.8, -9.0, 1.0, -2.0, 3.0, -4.0, -5.0, 6.0,
7.0, -8.0, -9.0, 10.0, -11.0, -1., 0., -0., 1.3};
float rf[N];
float rf2[N];
__attribute__ ((__target__ ("arch=z14")))
void
foof (void)
{
for (int i = 0; i < N; i++)
rf[i] = copysignf (af[i], bf[i]);
}
__attribute__((optimize("no-tree-vectorize")))
void
checkf (void)
{
for (int i = 0; i < N; i++)
{
rf2[i] = copysignf (af[i], bf[i]);
assert (rf[i] == rf2[i]
|| (isnan (rf[i]) && isnan (rf2[i])
&& signbit (rf[i]) == signbit (rf2[i])));
}
}
int main()
{
foo ();
check ();
foof ();
checkf ();
return r[0];
}
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