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40 lines
819 B
ArmAsm
40 lines
819 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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* Changes for long double by Ulrich Drepper <drepper@cygnus.com>
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*
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* Removed header file dependency for use in libmingwex.a by
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* Danny Smith <dannysmith@users.sourceforge.net>
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*/
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#include <asm.inc>
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.code
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.align 4
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PUBLIC _floorf
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_floorf:
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fld dword ptr [esp + 4]
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sub esp, 8
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fstcw [esp + 4] /* store fpu control word */
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/* We use here %edx although only the low 1 bits are defined.
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But none of the operations should care and they are faster
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than the 16 bit operations. */
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mov edx, [esp + 4]
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or edx, HEX(0400) /* round towards -oo */
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and edx, HEX(0f7ff)
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mov [esp], edx
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fldcw [esp] /* load modified control word */
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frndint /* round */
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fldcw [esp + 4] /* restore original control word */
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add esp, 8
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ret
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END
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