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Break a loop off to avoid a long loop even if the precision is not enough.

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This commit is contained in:
isaki 2013-04-20 04:38:51 +00:00
parent df80140090
commit 5d5a7da8b2
2 changed files with 12 additions and 6 deletions
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9
sys/arch/m68k/fpe/fpu_exp.c
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@ -1,4 +1,4 @@
/* $NetBSD: fpu_exp.c,v 1.6 2013/04/20 03:06:19 isaki Exp $ */
/* $NetBSD: fpu_exp.c,v 1.7 2013/04/20 04:38:51 isaki Exp $ */
/*
* Copyright (c) 1995 Ken Nakata
@ -32,10 +32,13 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fpu_exp.c,v 1.6 2013/04/20 03:06:19 isaki Exp $");
__KERNEL_RCSID(0, "$NetBSD: fpu_exp.c,v 1.7 2013/04/20 04:38:51 isaki Exp $");
#include "fpu_emulate.h"
/* The number of items to terminate the Taylor expansion */
#define MAX_ITEMS (2000)
/*
* fpu_exp.c: defines fpu_etox(), fpu_etoxm1(), fpu_tentox(), and fpu_twotox();
*/
@ -64,7 +67,7 @@ fpu_etox_taylor(struct fpemu *fe)
CPYFPN(&res, r);
k = 2;
for (;; k++) {
for (; k < MAX_ITEMS; k++) {
/* s1 = s0 * x / k */
CPYFPN(&fe->fe_f1, &s0);
CPYFPN(&fe->fe_f2, &x);

9
sys/arch/m68k/fpe/fpu_hyperb.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: fpu_hyperb.c,v 1.10 2013/04/19 14:05:12 isaki Exp $ */
/* $NetBSD: fpu_hyperb.c,v 1.11 2013/04/20 04:38:51 isaki Exp $ */
/*
* Copyright (c) 1995 Ken Nakata
@ -57,10 +57,13 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fpu_hyperb.c,v 1.10 2013/04/19 14:05:12 isaki Exp $");
__KERNEL_RCSID(0, "$NetBSD: fpu_hyperb.c,v 1.11 2013/04/20 04:38:51 isaki Exp $");
#include "fpu_emulate.h"
/* The number of items to terminate the Taylor expansion */
#define MAX_ITEMS (2000)
/*
* fpu_hyperb.c: defines the following functions
*
@ -159,7 +162,7 @@ __fpu_sinhcosh_taylor(struct fpemu *fe, struct fpn *s0, uint32_t f)
sign = 1; /* sign := (-1)^n */
for (;;) {
for (; f < (2 * MAX_ITEMS); ) {
/* (f1 :=) s0 * x^2 */
CPYFPN(&fe->fe_f1, s0);
CPYFPN(&fe->fe_f2, &x2);