derek.holloway
7502bf64a4
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43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
// RUN: %clang_cc1 -verify -std=c2y -ffreestanding -Wall -pedantic -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -verify -ffreestanding -Wall -pedantic -emit-llvm -o - %s | FileCheck %s
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// expected-no-diagnostics
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/* WG14 N3364: Yes
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* Give consistent wording for SNAN initialization v3
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*
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* Ensure that initializing from a signaling NAN (optionally with a unary + or
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* -) at translation time behaves correctly at runtime.
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*
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* This also serves as a test for C23's WG14 N2710 which introduces these
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* macros into float.h in Clang 22.
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*/
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#if __STDC_VERSION__ >= 202311L
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#include <float.h>
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#else
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#define FLT_SNAN __builtin_nansf("")
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#define DBL_SNAN __builtin_nans("")
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#define LDBL_SNAN __builtin_nansl("")
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#endif
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float f1 = FLT_SNAN;
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float f2 = +FLT_SNAN;
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float f3 = -FLT_SNAN;
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// CHECK: @f1 = {{.*}}global float +snan(0x200000)
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// CHECK: @f2 = {{.*}}global float +snan(0x200000)
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// CHECK: @f3 = {{.*}}global float -snan(0x200000)
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double d1 = DBL_SNAN;
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double d2 = +DBL_SNAN;
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double d3 = -DBL_SNAN;
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// CHECK: @d1 = {{.*}}global double +snan(0x4000000000000)
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// CHECK: @d2 = {{.*}}global double +snan(0x4000000000000)
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// CHECK: @d3 = {{.*}}global double -snan(0x4000000000000)
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long double ld1 = LDBL_SNAN;
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long double ld2 = +LDBL_SNAN;
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long double ld3 = -LDBL_SNAN;
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// CHECK: @ld1 = {{.*}}global {{double|x86_fp80|fp128|ppc_fp128}} +snan(
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// CHECK: @ld2 = {{.*}}global {{double|x86_fp80|fp128|ppc_fp128}} +snan(
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// CHECK: @ld3 = {{.*}}global {{double|x86_fp80|fp128|ppc_fp128}} {{-snan\(|f0x8000000000000000FFF4000000000000}}
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