target.h

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C头文件 代码 · 共 54 行

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*                            Open Watcom Project
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// UNCOMMENT_TOKEN Change this to reflect the proper size of a long double
//      - change EXP_LEN to 4
//      - change MAX_XP to 20

// maximum precision (number of digits) achievable for exponent when
// converting a binary floating point number to a string
#define EXP_LEN 3

// maximum precision (number of digits) achievable when converting a binary
// floating-point number to a string
#define MAX_SP  7       // single precision
#define MAX_DP  16      // double precision
#define MAX_XP  16      // extended precision

// number of digits required to accurately convert a floating-point string
// to its binary representation
#define CONVERSION_DIGITS 20

//                         s   0   .  <CONVERSION_DIGITS> E   s  <EXP_LEN>
//
#define CONVERSION_BUFFER (1 + 1 + 1 + CONVERSION_DIGITS+ 1 + 1 + EXP_LEN)