forked from KolibriOS/kolibrios
21 lines
230 B
ArmAsm
Executable File
21 lines
230 B
ArmAsm
Executable File
#include<libc/asm.h>
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MK_C_SYM(tan)
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fldl 4(%esp)
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fptan
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fnstsw %ax
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andw $0x400,%ax
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jnz 1f
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fstp %st(0)
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ret
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1: fldpi
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fadd %st(0)
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fxch %st(1)
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2: fprem1
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fstsw %ax
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andw $0x400,%ax
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jnz 2b
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fstp %st(1)
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fptan
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fstp %st(0)
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ret
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