40 lines
813 B
ArmAsm
40 lines
813 B
ArmAsm
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/*
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* Public domain.
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*/
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#include <libm-alias-ldouble.h>
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#include <machine/asm.h>
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RCSID("$NetBSD: $")
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ENTRY(__ceill)
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fldt 4(%esp)
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subl $32,%esp
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cfi_adjust_cfa_offset (32)
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fnstenv 4(%esp) /* store fpu environment */
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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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movl $0x0800,%edx /* round towards +oo */
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orl 4(%esp),%edx
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andl $0xfbff,%edx
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movl %edx,(%esp)
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fldcw (%esp) /* load modified control word */
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frndint /* round */
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/* Preserve "invalid" exceptions from sNaN input. */
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fnstsw
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andl $0x1, %eax
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orl %eax, 8(%esp)
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fldenv 4(%esp) /* restore original environment */
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addl $32,%esp
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cfi_adjust_cfa_offset (-32)
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ret
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END (__ceill)
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libm_alias_ldouble (__ceil, ceil)
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