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annotate gcc/config/floatunsitf.c @ 8:5066dc73ff8f

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Thu, 20 Aug 2009 19:10:35 +0900
parents a06113de4d67
children
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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1 /* Public domain. */
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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2 typedef int SItype __attribute__ ((mode (SI)));
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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3 typedef unsigned int USItype __attribute__ ((mode (SI)));
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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4 typedef float TFtype __attribute__ ((mode (TF)));
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5
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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6 TFtype
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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7 __floatunsitf (USItype u)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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8 {
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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9 SItype s = (SItype) u;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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10 TFtype r = (TFtype) s;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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11 if (s < 0)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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12 r += (TFtype)2.0 * (TFtype) ((USItype) 1
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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13 << (sizeof (USItype) * __CHAR_BIT__ - 1));
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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14 return r;
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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15 }