Use STRICT_ASSIGN() for _kernel_rem_pio2f() and _kernel_rem_pio2f()
instead of a volatile cast hack for the float version only. The cast hack broke with gcc-4, but this was harmless since the float version hasn't been used for a few years. Merge from the float version so that the double version has a chance of working on i386 with extra precision. See k_rem_pio2f.c rev.1.8 for the original hack. Convert to _FBSDID().
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=175499
@ -11,9 +11,8 @@
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* ====================================================
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*/
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#ifndef lint
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static char rcsid[] = "$FreeBSD$";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* __kernel_rem_pio2(x,y,e0,nx,prec,ipio2)
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@ -131,6 +130,8 @@ static char rcsid[] = "$FreeBSD$";
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* to produce the hexadecimal values shown.
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*/
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#include <float.h>
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#include "math.h"
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#include "math_private.h"
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@ -277,6 +278,7 @@ twon24 = 5.96046447753906250000e-08; /* 0x3E700000, 0x00000000 */
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case 2:
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fw = 0.0;
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for (i=jz;i>=0;i--) fw += fq[i];
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STRICT_ASSIGN(float,fw,fw);
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y[0] = (ih==0)? fw: -fw;
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fw = fq[0]-fw;
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for (i=1;i<=jz;i++) fw += fq[i];
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@ -13,9 +13,10 @@
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* ====================================================
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*/
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#ifndef lint
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static char rcsid[] = "$FreeBSD$";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <float.h>
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#include "math.h"
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#include "math_private.h"
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@ -169,7 +170,7 @@ twon8 = 3.9062500000e-03; /* 0x3b800000 */
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case 2:
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fw = 0.0;
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for (i=jz;i>=0;i--) fw += fq[i];
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fw = *(volatile float *)&fw; /* clip any extra precision */
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STRICT_ASSIGN(float,fw,fw);
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y[0] = (ih==0)? fw: -fw;
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fw = fq[0]-fw;
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for (i=1;i<=jz;i++) fw += fq[i];
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