sysdeps/i386/fpu/e_exp10f.S - Issue 3539003: Fix up RET instructions in sysdeps/i386/fpu

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Side by Side Diff: sysdeps/i386/fpu/e_exp10f.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 Ulrich Drepper.	2 * Written by Ulrich Drepper.

3 */	3 */

4	4

5 #include <machine/asm.h>	5 #include <machine/asm.h>

6	6

7 /* e^x = 2^(x * log2(10)) */	7 /* e^x = 2^(x * log2(10)) */

8 ENTRY(__ieee754_exp10f)	8 ENTRY(__ieee754_exp10f)

9 flds 4(%esp)	9 flds 4(%esp)

10 /* I added the following ugly construct because exp(+-Inf) resulted	10 /* I added the following ugly construct because exp(+-Inf) resulted

(...skipping 10 matching lines...) Expand all Loading...
21 fmulp /* x * log2(10) */	21 fmulp /* x * log2(10) */

22 fld %st	22 fld %st

23 frndint /* int(x * log2(10)) */	23 frndint /* int(x * log2(10)) */

24 fsubr %st,%st(1) /* fract(x * log2(10)) */	24 fsubr %st,%st(1) /* fract(x * log2(10)) */

25 fxch	25 fxch

26 f2xm1 /* 2^(fract(x * log2(10))) - 1 */	26 f2xm1 /* 2^(fract(x * log2(10))) - 1 */

27 fld1	27 fld1

28 faddp /* 2^(fract(x * log2(10))) */	28 faddp /* 2^(fract(x * log2(10))) */

29 fscale /* e^x */	29 fscale /* e^x */

30 fstp %st(1)	30 fstp %st(1)

31 » ret	31 » NACLRET

32	32

33 1: testl $0x200, %eax /* Test sign. */	33 1: testl $0x200, %eax /* Test sign. */

34 jz 2f /* If positive, jump. */	34 jz 2f /* If positive, jump. */

35 fstp %st	35 fstp %st

36 fldz /* Set result to 0. */	36 fldz /* Set result to 0. */

37 2:» ret	37 2:» NACLRET

38 END (__ieee754_exp10f)	38 END (__ieee754_exp10f)

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