clang/test/AST/const-fpfeatures.c

   1 // RUN: %clang_cc1 -S -emit-llvm -triple i386-linux -Wno-unknown-pragmas %s -o - | FileCheck %s
   2
   3 // nextUp(1.F) == 0x1.000002p0F
   4
   5 const double _Complex C0 = 0x1.000001p0 + 0x1.000001p0I;
   6
   7 #pragma STDC FENV_ROUND FE_UPWARD
   8
   9 float F1u = 1.0F + 0x0.000002p0F;
  10 float F2u = 1.0F + 0x0.000001p0F;
  11 float F3u = 0x1.000001p0;
  12 // CHECK: @F1u = {{.*}} float 0x3FF0000020000000
  13 // CHECK: @F2u = {{.*}} float 0x3FF0000020000000
  14 // CHECK: @F3u = {{.*}} float 0x3FF0000020000000
  15
  16 float FI1u = 0xFFFFFFFFU;
  17 // CHECK: @FI1u = {{.*}} float 0x41F0000000000000
  18
  19 float _Complex C1u = C0;
  20 // CHECK: @C1u = {{.*}} { float, float } { float 0x3FF0000020000000, float 0x3FF0000020000000 }
  21
  22
  23 #pragma STDC FENV_ROUND FE_DOWNWARD
  24
  25 float F1d = 1.0F + 0x0.000002p0F;
  26 float F2d = 1.0F + 0x0.000001p0F;
  27 float F3d = 0x1.000001p0;
  28
  29 // CHECK: @F1d = {{.*}} float 0x3FF0000020000000
  30 // CHECK: @F2d = {{.*}} float 1.000000e+00
  31 // CHECK: @F3d = {{.*}} float 1.000000e+00
  32
  33 float FI1d = 0xFFFFFFFFU;
  34 // CHECK: @FI1d = {{.*}} float 0x41EFFFFFE0000000
  35
  36 float _Complex C1d = C0;
  37 // CHECK: @C1d = {{.*}} { float, float } { float 1.000000e+00, float 1.000000e+00 }