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0ac5ae2335
libm is now somewhat integrated with gcc's -ffinite-math-only option and lots of the wrapper functions have been optimized.
23 lines
540 B
ArmAsm
23 lines
540 B
ArmAsm
/*
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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*/
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#include <machine/asm.h>
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RCSID("$NetBSD: e_acos.S,v 1.4 1995/05/08 23:44:37 jtc Exp $")
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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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fld %st /* x : x */
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fmul %st(0) /* x^2 : x */
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fld1 /* 1 : x^2 : x */
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fsubp /* 1 - x^2 : x */
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fsqrt /* sqrt (1 - x^2) : x */
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fxch %st(1) /* x : sqrt (1 - x^2) */
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fpatan /* atan (sqrt(1 - x^2) / x) */
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ret
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END (__ieee754_acos)
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strong_alias (__ieee754_acos, __acos_finite)
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