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Fix from Bruce Evans. Commited to FreeBSD earlier this month, but was 

never forwarded to me :-(.

> Clean up the FP stack before returning.  The i387 exp() leaked an FP
> register on its first call.  Subsequent calls reused the register so
> the leak didn't accumulate.
This commit is contained in:
jtc 1996-06-25 02:07:09 +00:00
parent 50334a801c
commit 5743dc5d7a
1 changed files with 2 additions and 1 deletions
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3
lib/libm/arch/i387/e_exp.S
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@ -5,7 +5,7 @@
#include <machine/asm.h>
RCSID("$NetBSD: e_exp.S,v 1.4 1995/05/08 23:47:04 jtc Exp $")
RCSID("$NetBSD: e_exp.S,v 1.5 1996/06/25 02:07:09 jtc Exp $")
/* e^x = 2^(x * log2(e)) */
ENTRY(__ieee754_exp)
@ -20,4 +20,5 @@ ENTRY(__ieee754_exp)
fld1
faddp /* 2^(fract(x * log2(e))) */
fscale /* e^x */
fstpl %st(1)
ret