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annotate libgcc/floatunsisf.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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111
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1 /* Public domain. */
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2 typedef int SItype __attribute__ ((mode (SI)));
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3 typedef unsigned int USItype __attribute__ ((mode (SI)));
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4 typedef float SFtype __attribute__ ((mode (SF)));
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5
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6 SFtype
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7 __floatunsisf (USItype u)
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8 {
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9 SItype s = (SItype) u;
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10 if (s < 0)
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11 {
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12 /* As in expand_float, compute (u & 1) | (u >> 1) to ensure
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13 correct rounding if a nonzero bit is shifted out. */
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14 return (SFtype) 2.0 * (SFtype) (SItype) ((u & 1) | (u >> 1));
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15 }
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16 else
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17 return (SFtype) s;
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18 }