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handle INF and NAN

This commit is contained in:
Martin Kroeker 2024-07-30 10:35:58 +02:00 committed by GitHub
parent 6843ec7732
commit 91f656cd76
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GPG Key ID: B5690EEEBB952194
1 changed files with 22 additions and 9 deletions
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31
kernel/zarch/zscal.c
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@ -237,13 +237,19 @@ int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i,
temp0 = NAN;
else
temp0 = -da_i * x[i + 1];
x[i + 1] = da_i * x[i];
if (!isinf(x[i + 1]))
x[i + 1] = da_i * x[i];
else
x[i + 1] = NAN;
x[i] = temp0;
if (isnan(x[i + inc_x]) || isinf(x[i + inc_x]))
temp1 = NAN;
else
temp1 = -da_i * x[i + 1 + inc_x];
x[i + 1 + inc_x] = da_i * x[i + inc_x];
if (!isinf(x[i + 1 + inc_x]))
x[i + 1 + inc_x] = da_i * x[i + inc_x];
else
x[i + 1 + inc_x] = NAN;
x[i + inc_x] = temp1;
i += 2 * inc_x;
j += 2;
@ -256,7 +262,10 @@ int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i,
temp0 = NAN;
else
temp0 = -da_i * x[i + 1];
x[i + 1] = da_i * x[i];
if (!isinf(x[i +1]))
x[i + 1] = da_i * x[i];
else
x[i + 1] = NAN;
x[i] = temp0;
i += inc_x;
j++;
@ -330,7 +339,7 @@ int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i,
zscal_kernel_8_zero(n1, x);
else
zscal_kernel_8(n1, da_r, da_i, x);
else if (da_i == 0)
else if (da_i == 0 && !isnan(da_r))
zscal_kernel_8_zero_i(n1, alpha, x);
else
zscal_kernel_8(n1, da_r, da_i, x);
@ -339,14 +348,15 @@ int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i,
j = n1;
}
if (da_r == 0.0) {
if (da_r == 0.0 || isnan(da_r)) {
if (da_i == 0.0) {
double res= 0.0;
if (isnan(da_r)) res = da_r;
while (j < n) {
x[i] = 0.0;
x[i + 1] = 0.0;
x[i] = res;
x[i + 1] = res;
i += 2;
j++;
@ -360,7 +370,10 @@ int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i,
temp0 = NAN;
else
temp0 = -da_i * x[i + 1];
x[i + 1] = da_i * x[i];
if (!isinf(x[i + 1]))
x[i + 1] = da_i * x[i];
else
x[i + 1] = NAN;
x[i] = temp0;
i += 2;
j++;