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builtins: Expand out floating point exponents for MSVC

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MSVC 2013 doesnt support C99 fully, including the hexidecimal floating point
representation.  Use the expanded value to permit building with it.

Patch by Tee Hao Wei!

llvm-svn: 250365
This commit is contained in:
Saleem Abdulrasool
2015-10-15 04:26:19 +00:00
parent f415791bda
commit b5bba5c256
2 changed files with 5 additions and 5 deletions
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4
compiler-rt/lib/builtins/floatdidf.c
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@@ -32,8 +32,8 @@ ARM_EABI_FNALIAS(l2d, floatdidf)
COMPILER_RT_ABI double
__floatdidf(di_int a)
{
static const double twop52 = 0x1.0p52;
static const double twop32 = 0x1.0p32;
static const double twop52 = 4503599627370496.0; // 0x1.0p52
static const double twop32 = 4294967296.0; // 0x1.0p32
union { int64_t x; double d; } low = { .d = twop52 };

6
compiler-rt/lib/builtins/floatundidf.c
View File

@@ -32,9 +32,9 @@ ARM_EABI_FNALIAS(ul2d, floatundidf)
COMPILER_RT_ABI double
__floatundidf(du_int a)
{
static const double twop52 = 0x1.0p52;
static const double twop84 = 0x1.0p84;
static const double twop84_plus_twop52 = 0x1.00000001p84;
static const double twop52 = 4503599627370496.0; // 0x1.0p52
static const double twop84 = 19342813113834066795298816.0; // 0x1.0p84
static const double twop84_plus_twop52 = 19342813118337666422669312.0; // 0x1.00000001p84
union { uint64_t x; double d; } high = { .d = twop84 };
union { uint64_t x; double d; } low = { .d = twop52 };