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Avoid undefined behaviour in std::byte operators (LWG 2950)
[thirdparty/gcc.git] / libgcc / floatunsidf.c
CommitLineData
d1fec927 1/* Public domain. */
2typedef int SItype __attribute__ ((mode (SI)));
3typedef unsigned int USItype __attribute__ ((mode (SI)));
4typedef float DFtype __attribute__ ((mode (DF)));
5
6DFtype
7__floatunsidf (USItype u)
8{
9 SItype s = (SItype) u;
10 DFtype r = (DFtype) s;
11 if (s < 0)
12 r += (DFtype)2.0 * (DFtype) ((USItype) 1
13 << (sizeof (USItype) * __CHAR_BIT__ - 1));
14 return r;
15}