86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
/* $Header: /pjproject-0.3/pjlib/include/pj/compat/high_precision.h 3 10/29/05 11:51a Bennylp $ */
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#ifndef __PJ_COMPAT_HIGH_PRECISION_H__
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#define __PJ_COMPAT_HIGH_PRECISION_H__
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#if defined(PJ_HAS_FLOATING_POINT) && PJ_HAS_FLOATING_POINT != 0
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/*
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* The first choice for high precision math is to use double.
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*/
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# include <math.h>
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typedef double pj_highprec_t;
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# define PJ_HIGHPREC_VALUE_IS_ZERO(a) (a==0)
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# define pj_highprec_mod(a,b) (a=fmod(a,b))
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#elif defined(PJ_LINUX_KERNEL) && PJ_LINUX_KERNEL != 0
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# include <asm/div64.h>
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typedef pj_int64_t pj_highprec_t;
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# define pj_highprec_div(a1,a2) do_div(a1,a2)
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# define pj_highprec_mod(a1,a2) (a1=do_mod(a1, a2))
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PJ_INLINE(pj_int64_t) do_mod( pj_int64_t a1, pj_int64_t a2)
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{
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return do_div(a1,a2);
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}
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#elif defined(PJ_HAS_INT64) && PJ_HAS_INT64 != 0
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/*
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* Next choice is to use 64-bit arithmatics.
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*/
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typedef pj_int64_t pj_highprec_t;
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#else
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# warning "High precision math is not available"
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/*
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* Last, fallback to 32-bit arithmetics.
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*/
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typedef pj_int32_t pj_highprec_t;
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#endif
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/**
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* @def pj_highprec_mul
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* pj_highprec_mul(a1, a2) - High Precision Multiplication
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* Multiply a1 and a2, and store the result in a1.
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*/
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#ifndef pj_highprec_mul
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# define pj_highprec_mul(a1,a2) (a1 = a1 * a2)
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#endif
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/**
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* @def pj_highprec_div
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* pj_highprec_div(a1, a2) - High Precision Division
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* Divide a2 from a1, and store the result in a1.
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*/
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#ifndef pj_highprec_div
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# define pj_highprec_div(a1,a2) (a1 = a1 / a2)
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#endif
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/**
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* @def pj_highprec_mod
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* pj_highprec_mod(a1, a2) - High Precision Modulus
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* Get the modulus a2 from a1, and store the result in a1.
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*/
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#ifndef pj_highprec_mod
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# define pj_highprec_mod(a1,a2) (a1 = a1 % a2)
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#endif
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/**
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* @def PJ_HIGHPREC_VALUE_IS_ZERO(a)
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* Test if the specified high precision value is zero.
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*/
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#ifndef PJ_HIGHPREC_VALUE_IS_ZERO
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# define PJ_HIGHPREC_VALUE_IS_ZERO(a) (a==0)
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#endif
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#endif /* __PJ_COMPAT_HIGH_PRECISION_H__ */
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