%% options copyright owner = Dirk Krause copyright year = 2014-xxxx license = bsd %% header /** @file dk3maodd.h Write numbers to decimal dkChar strings. */ #include #include #if DK3_HAVE_SYS_TYPES_H #include #endif #if DK3_HAVE_STDINT #include #endif #if DK3_HAVE_INTTYPES_H #include #endif #if DK3_HAVE_LIMITS_H #include #endif #if DK3_HAVE_MATH_H #include #endif #if DK3_HAVE_FLOAT_H #include #endif #include #ifdef __cplusplus extern "C" { #endif /** Convert largest size integer to string. @param rb Result buffer. @param sz Result buffer size (number of bytes). @param va Value to convert. @return 1 on success, 0 on error. */ int dk3ma_im_to_string(dkChar *rb, size_t sz, dk3_im_t va); /** Convert largest size unsigned integer to string. @param rb Result buffer. @param sz Result buffer size (number of bytes). @param va Value to convert. @return 1 on success, 0 on error. */ int dk3ma_um_to_string(dkChar *rb, size_t sz, dk3_um_t va); #ifdef __cplusplus } #endif %% module #include "dk3ma.h" $!trace-include /** Size correction for alignment. */ #define DK3MAODD_ALIGN(sz,al) \ ((0 == (sz % al)) ? (sz) : (((sz / al) + 1) * al)) int dk3ma_um_to_string(dkChar *rb, size_t sz, dk3_um_t va) { #if DK3_CHAR_SIZE > 1 char buf[DK3MAODD_ALIGN((8*DK3_SIZEOF_UM),16)]; char *ptr; dk3_um_t x; size_t szmax = sizeof(buf); size_t szused = 0; size_t i; int back = 1; char c; if ((NULL != rb) && (0 < sz)) { rb[0] = dkT('\0'); ptr = buf; if (2 <= szmax) { do { x = va % 10; va = va / 10; c = '\0'; switch((int)x) { case 0: { c = '0'; } break; case 1: { c = '1'; } break; case 2: { c = '2'; } break; case 3: { c = '3'; } break; case 4: { c = '4'; } break; case 5: { c = '5'; } break; case 6: { c = '6'; } break; case 7: { c = '7'; } break; case 8: { c = '8'; } break; case 9: { c = '9'; } break; } if (szused < szmax) { *(ptr++) = c; szused++; } else { back = 0; } } while((DK3_UM_0 != va) && (szused < szmax) && (1 == back)); if (szused < szmax) { buf[szused] = '\0'; } else { back = 0; buf[szmax - 1] = '\0'; } if (1 == back) { if (szused < sz) { for (i = 0; i < szused; i++) { rb[i] = (dkChar)(buf[szused - i - 1]); } rb[szused] = dkT('\0'); } else { back = 0; } } } } return back; #else return (dk3ma_um_to_c8_string(rb, sz, va)); #endif } int dk3ma_im_to_string(dkChar *rb, size_t sz, dk3_im_t va) { #if DK3_CHAR_SIZE > 1 dkChar *orb; dk3_um_t umva; int back = 0; if ((NULL != rb) && (0 < sz)) { orb = rb; rb[0] = dkT('\0'); if (2 < sz) { if (DK3_IM_0 > va) { *(rb++) = dkT('-'); sz--; if (DK3_IM_MIN == va) { umva = (dk3_um_t)DK3_IM_MAX; umva++; } else { umva = (dk3_um_t)(DK3_IM_0 - va); } } else { umva = (dk3_um_t)va; } back = dk3ma_um_to_string(rb, sz, umva); } if (0 == back) { *orb = dkT('\0'); } } return back; #else return (dk3ma_im_to_c8_string(rb, sz, va)); #endif }