sysdeps/i386/fpu/e_exp.S - Issue 3539003: Fix up RET instructions in sysdeps/i386/fpu

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Side by Side Diff: sysdeps/i386/fpu/e_exp.S

Issue 3539003: Fix up RET instructions in sysdeps/i386/fpu (Closed) Base URL: ssh://gitrw.chromium.org/nacl-glibc

Patch Set: Created 10 years, 2 months ago

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1 /*	1 /*

2 * Written by J.T. Conklin <jtc@netbsd.org>.	2 * Written by J.T. Conklin <jtc@netbsd.org>.

3 * Public domain.	3 * Public domain.

4 */	4 */

5	5

6 #include <machine/asm.h>	6 #include <machine/asm.h>

7	7

8 RCSID("$NetBSD: e_exp.S,v 1.7 1996/07/03 17:31:28 jtc Exp $")	8 RCSID("$NetBSD: e_exp.S,v 1.7 1996/07/03 17:31:28 jtc Exp $")

9	9

10 /* e^x = 2^(x * log2(e)) */	10 /* e^x = 2^(x * log2(e)) */

(...skipping 13 matching lines...) Expand all Loading...
24 fmulp /* x * log2(e) */	24 fmulp /* x * log2(e) */

25 fld %st	25 fld %st

26 frndint /* int(x * log2(e)) */	26 frndint /* int(x * log2(e)) */

27 fsubr %st,%st(1) /* fract(x * log2(e)) */	27 fsubr %st,%st(1) /* fract(x * log2(e)) */

28 fxch	28 fxch

29 f2xm1 /* 2^(fract(x * log2(e))) - 1 */	29 f2xm1 /* 2^(fract(x * log2(e))) - 1 */

30 fld1	30 fld1

31 faddp /* 2^(fract(x * log2(e))) */	31 faddp /* 2^(fract(x * log2(e))) */

32 fscale /* e^x */	32 fscale /* e^x */

33 fstp %st(1)	33 fstp %st(1)

34 » ret	34 » NACLRET

35	35

36 1: testl $0x200, %eax /* Test sign. */	36 1: testl $0x200, %eax /* Test sign. */

37 jz 2f /* If positive, jump. */	37 jz 2f /* If positive, jump. */

38 fstp %st	38 fstp %st

39 fldz /* Set result to 0. */	39 fldz /* Set result to 0. */

40 2:» ret	40 2:» NACLRET

41 END (__ieee754_exp)	41 END (__ieee754_exp)

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