Last change
on this file since 403 was 337, checked in by coas-nagasima, 6 years ago |
ASP3版ECNLを追加
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-
Property svn:eol-style
set to
native
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Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
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File size:
294 bytes
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Line | |
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1 | #include "libm.h"
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2 |
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3 | float truncf(float x)
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4 | {
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5 | union {float f; uint32_t i;} u = {x};
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6 | int e = (int)(u.i >> 23 & 0xff) - 0x7f + 9;
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7 | uint32_t m;
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8 |
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9 | if (e >= 23 + 9)
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10 | return x;
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11 | if (e < 9)
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12 | e = 1;
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13 | m = -1U >> e;
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14 | if ((u.i & m) == 0)
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15 | return x;
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16 | FORCE_EVAL(x + 0x1p120f);
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17 | u.i &= ~m;
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18 | return u.f;
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19 | }
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