1994-02-11 21:20:17 +03:00
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/*
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1995-04-29 02:43:31 +04:00
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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1994-02-11 21:20:17 +03:00
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*/
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#include <machine/asm.h>
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1999-07-02 19:37:33 +04:00
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RCSID("$NetBSD: e_acos.S,v 1.5 1999/07/02 15:37:34 simonb Exp $")
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1994-03-12 04:30:22 +03:00
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1994-02-11 21:20:17 +03:00
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/* acos = atan (sqrt(1 - x^2) / x) */
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ENTRY(__ieee754_acos)
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fldl 4(%esp) /* x */
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fst %st(1)
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fmul %st(0) /* x^2 */
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1999-07-02 19:37:33 +04:00
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fld1
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1994-02-11 21:20:17 +03:00
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fsubp /* 1 - x^2 */
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fsqrt /* sqrt (1 - x^2) */
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fxch %st(1)
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fpatan
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ret
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