[X86] Better handling of impossibly large stack frames (#124217)
[llvm-project.git] / libclc / generic / lib / math / clc_tan.cl
blob4daaee59b10d2d395991e23ed101209c98c7ffb1
1 /*
2 * Copyright (c) 2014 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 * THE SOFTWARE.
22 #include <clc/clc.h>
23 #include <clc/clcmacro.h>
24 #include <clc/math/clc_fabs.h>
25 #include <clc/relational/clc_isinf.h>
26 #include <clc/relational/clc_isnan.h>
28 #include "math.h"
29 #include "sincos_helpers.h"
30 #include "tables.h"
32 _CLC_DEF _CLC_OVERLOAD float __clc_tan(float x) {
33 int ix = as_int(x);
34 int ax = ix & 0x7fffffff;
35 float dx = as_float(ax);
37 float r0, r1;
38 int regn = __clc_argReductionS(&r0, &r1, dx);
40 float t = __clc_tanf_piby4(r0 + r1, regn);
41 t = as_float(as_int(t) ^ (ix ^ ax));
43 t = ax >= PINFBITPATT_SP32 ? as_float(QNANBITPATT_SP32) : t;
44 // Take care of subnormals
45 t = (x == 0.0f) ? x : t;
46 return t;
48 _CLC_UNARY_VECTORIZE(_CLC_DEF _CLC_OVERLOAD, float, __clc_tan, float);
50 #ifdef cl_khr_fp64
51 #include "sincosD_piby4.h"
53 _CLC_DEF _CLC_OVERLOAD double __clc_tan(double x) {
54 double y = __clc_fabs(x);
56 double r, rr;
57 int regn;
59 if (y < 0x1.0p+30)
60 __clc_remainder_piby2_medium(y, &r, &rr, &regn);
61 else
62 __clc_remainder_piby2_large(y, &r, &rr, &regn);
64 double2 tt = __clc_tan_piby4(r, rr);
66 int2 t = as_int2(regn & 1 ? tt.y : tt.x);
67 t.hi ^= (x < 0.0) << 31;
69 return __clc_isnan(x) || __clc_isinf(x) ? as_double(QNANBITPATT_DP64)
70 : as_double(t);
72 _CLC_UNARY_VECTORIZE(_CLC_DEF _CLC_OVERLOAD, double, __clc_tan, double);
74 #endif