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54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
#pragma once
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typedef __int32 int32_t;
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typedef unsigned __int32 u_int32_t;
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typedef union
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{
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double value;
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struct
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{
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u_int32_t lsw;
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u_int32_t msw;
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} parts;
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} ieee_double_shape_type;
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#define EXTRACT_WORDS(ix0,ix1,d) \
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do { \
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ieee_double_shape_type ew_u; \
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ew_u.value = (d); \
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(ix0) = ew_u.parts.msw; \
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(ix1) = ew_u.parts.lsw; \
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} while (0)
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/* Get the more significant 32 bit int from a double. */
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#define GET_HIGH_WORD(i,d) \
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do { \
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ieee_double_shape_type gh_u; \
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gh_u.value = (d); \
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(i) = gh_u.parts.msw; \
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} while (0)
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#define GET_LOW_WORD(i,d) \
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do { \
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ieee_double_shape_type gl_u; \
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gl_u.value = (d); \
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(i) = gl_u.parts.lsw; \
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} while (0)
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static __inline double __ieee754_sqrt(double x) {return sqrt(x);}
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static __inline double __ieee754_log(double x) {return log(x);}
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static __inline double __cos(double x) {return cos(x);}
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static __inline void __sincos(double x, double *s, double *c)
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{
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*s = sin(x);
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*c = cos(x);
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}
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double __ieee754_j0(double);
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double __ieee754_j1(double);
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double __ieee754_jn(int, double);
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double __ieee754_y0(double);
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double __ieee754_y1(double);
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double __ieee754_yn(int, double);
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