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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | #include <ll/i386/stdlib.h> |
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| 23 | #include <ll/i386/string.h> |
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| 24 | #include <ll/i386/limits.h> |
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| 25 | #include <ll/i386/float.h> |
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| 26 | #include <ll/i386/mem.h> |
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| 27 | #include <ll/stdarg.h> |
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| 28 | #include <ll/ctype.h> |
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| 29 | #include <ll/math.h> |
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| 30 | #include "sprintf.h" |
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| 31 | |||
| 32 | FILE(gcvt); |
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| 33 | |||
| 34 | unsigned gcvt(double v,char *buffer,int width,int prec,int flag) |
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| 35 | { |
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| 36 | double v_abs; |
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| 37 | int exponent; |
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| 38 | /* Manage Inf & NaN */ |
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| 39 | if (isspecial(v,buffer)) return(strlen(buffer)); |
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| 40 | /* Extract absolute value */ |
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| 41 | if (v < 0.0) v_abs = -v; |
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| 42 | else v_abs = v; |
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| 43 | /* Zero check! */ |
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| 44 | if (v_abs < DBL_MIN) { |
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| 45 | *buffer++ = '0'; |
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| 46 | *buffer = 0; |
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| 47 | return(1); |
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| 48 | } |
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| 49 | exponent = 0; |
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| 50 | /* Evaluate exponent */ |
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| 51 | if (v_abs < 1.0) { |
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| 52 | while (v_abs < 1) { |
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| 53 | v_abs *= 10.0; |
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| 54 | exponent--; |
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| 55 | } |
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| 56 | } |
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| 57 | else { |
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| 58 | while (v_abs >= 10.0) { |
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| 59 | v_abs /= 10.0; |
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| 60 | exponent++; |
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| 61 | } |
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| 62 | } |
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| 63 | /* Choose shortest format on exponent value */ |
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| 64 | if (exponent > 7 || exponent < -7) |
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| 65 | return(ecvt(v,buffer,width,prec,flag)); |
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| 66 | else return(fcvt(v,buffer,width,prec,flag)); |
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| 67 | } |