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[libclc] use clc functions in clspv/shared/vstore_half.cl #171770

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Merged
wenju-he merged 1 commit into from
Dec 11, 2025
+18 −12
Merged

[libclc] use clc functions in clspv/shared/vstore_half.cl #171770

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30 changes: 18 additions & 12 deletions libclc/opencl/lib/clspv/shared/vstore_half.cl
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,13 @@

#include <clc/clc_as_type.h>
#include <clc/float/definitions.h>
#include <clc/math/clc_copysign.h>
#include <clc/math/clc_fabs.h>
#include <clc/math/clc_nextafter.h>
#include <clc/opencl/opencl-base.h>
#include <clc/relational/clc_isinf.h>
#include <clc/relational/clc_isnan.h>
#include <clc/shared/clc_min.h>

#pragma OPENCL EXTENSION cl_khr_byte_addressable_store : enable

Expand Down Expand Up @@ -48,32 +54,32 @@

_CLC_DEF _CLC_OVERLOAD float __clc_rtz(float x) {
/* Handle nan corner case */
if (isnan(x))
if (__clc_isnan(x))
return x;
/* RTZ does not produce Inf for large numbers */
if (fabs(x) > 65504.0f && !isinf(x))
return copysign(65504.0f, x);
if (__clc_fabs(x) > 65504.0f && !__clc_isinf(x))
return __clc_copysign(65504.0f, x);

const int exp = (__clc_as_uint(x) >> 23 & 0xff) - 127;
/* Manage range rounded to +- zero explicitely */
if (exp < -24)
return copysign(0.0f, x);
return __clc_copysign(0.0f, x);

/* Remove lower 13 bits to make sure the number is rounded down */
int mask = 0xffffe000;
/* Denormals cannot be flushed, and they use different bit for rounding */
if (exp < -14)
mask <<= min(-(exp + 14), 10);
mask <<= __clc_min(-(exp + 14), 10);

return __clc_as_float(__clc_as_uint(x) & mask);
}

_CLC_DEF _CLC_OVERLOAD float __clc_rti(float x) {
/* Handle nan corner case */
if (isnan(x))
if (__clc_isnan(x))
return x;

const float inf = copysign(INFINITY, x);
const float inf = __clc_copysign(INFINITY, x);
uint ux = __clc_as_uint(x);

/* Manage +- infinity explicitely */
Expand All @@ -82,23 +88,23 @@ _CLC_DEF _CLC_OVERLOAD float __clc_rti(float x) {
}
/* Manage +- zero explicitely */
if ((ux & 0x7fffffff) == 0) {
return copysign(0.0f, x);
return __clc_copysign(0.0f, x);
}

const int exp = (__clc_as_uint(x) >> 23 & 0xff) - 127;
/* Manage range rounded to smallest half denormal explicitely */
if (exp < -24) {
return copysign(0x1.0p-24f, x);
return __clc_copysign(0x1.0p-24f, x);
}

/* Set lower 13 bits */
int mask = (1 << 13) - 1;
/* Denormals cannot be flushed, and they use different bit for rounding */
if (exp < -14) {
mask = (1 << (13 + min(-(exp + 14), 10))) - 1;
mask = (1 << (13 + __clc_min(-(exp + 14), 10))) - 1;
}

const float next = nextafter(__clc_as_float(ux | mask), inf);
const float next = __clc_nextafter(__clc_as_float(ux | mask), inf);
return ((ux & mask) == 0) ? __clc_as_float(ux) : next;
}
_CLC_DEF _CLC_OVERLOAD float __clc_rtn(float x) {
Expand All @@ -116,7 +122,7 @@ _CLC_DEF _CLC_OVERLOAD float __clc_rte(float x) {
/* The default assumes lower 13 bits are rounded,
* but it might be more for denormals.
* Shifting beyond last == 0b, and qr == 00b is not necessary */
shift += min(-(exp + 14), 15);
shift += __clc_min(-(exp + 14), 15);
}
int mask = (1 << shift) - 1;
const uint grs = mantissa & mask;
Expand Down
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