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Add math library support for trunc functions. From Brennan Ashton.

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This commit is contained in:
Gregory Nutt 2015-01-26 19:00:35 -06:00
parent 1987004b72
commit 8e79323694
1 changed files with 0 additions and 33 deletions
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33
interpreters/micropython/micropython_main.c
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@ -149,39 +149,6 @@ float nanf(FAR const char *tagp)
return 0; return 0;
} }
float truncf(float x)
{
union
{
float f;
uint32_t i;
} u =
{
x};
int e = (int)(u.i >> 23 & 0xff) - 0x7f + 9;
uint32_t m;
if (e >= 23 + 9)
{
return x;
}
if (e < 9)
{
e = 1;
}
m = -1U >> e;
if ((u.i & m) == 0)
{
return x;
}
FORCE_EVAL(x + 0x1p120f);
u.i &= ~m;
return u.f;
}
/**************************************************************************** /****************************************************************************
* mp_import_stat * mp_import_stat
****************************************************************************/ ****************************************************************************/