76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
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/**
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* This file has no copyright assigned and is placed in the Public Domain.
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* This file is part of the mingw-w64 runtime package.
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* No warranty is given; refer to the file DISCLAIMER.PD within this package.
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*/
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void sincos (double __x, double *p_sin, double *p_cos);
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void sincosl (long double __x, long double *p_sin, long double *p_cos);
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void sincosf (float __x, float *p_sin, float *p_cos);
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void sincos (double __x, double *p_sin, double *p_cos)
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{
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long double c, s;
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__asm__ __volatile__ ("fsincos\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jz 1f\n\t"
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"fldpi\n\t"
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"fadd %%st(0)\n\t"
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"fxch %%st(1)\n\t"
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"2: fprem1\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jnz 2b\n\t"
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"fstp %%st(1)\n\t"
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"fsincos\n\t"
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"1:" : "=t" (c), "=u" (s) : "0" (__x));
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*p_sin = (double) s;
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*p_cos = (double) c;
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}
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void sincosf (float __x, float *p_sin, float *p_cos)
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{
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long double c, s;
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__asm__ __volatile__ ("fsincos\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jz 1f\n\t"
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"fldpi\n\t"
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"fadd %%st(0)\n\t"
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"fxch %%st(1)\n\t"
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"2: fprem1\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jnz 2b\n\t"
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"fstp %%st(1)\n\t"
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"fsincos\n\t"
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"1:" : "=t" (c), "=u" (s) : "0" (__x));
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*p_sin = (float) s;
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*p_cos = (float) c;
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}
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void sincosl (long double __x, long double *p_sin, long double *p_cos)
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{
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long double c, s;
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__asm__ __volatile__ ("fsincos\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jz 1f\n\t"
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"fldpi\n\t"
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"fadd %%st(0)\n\t"
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"fxch %%st(1)\n\t"
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"2: fprem1\n\t"
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"fnstsw %%ax\n\t"
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"testl $0x400, %%eax\n\t"
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"jnz 2b\n\t"
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"fstp %%st(1)\n\t"
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"fsincos\n\t"
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"1:" : "=t" (c), "=u" (s) : "0" (__x));
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*p_sin = s;
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*p_cos = c;
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}
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