void build_tables()

in src/couch_quickjs/quickjs/dtoa.c [754:842]

• 76 lines of code
• 17 McCabe index (conditional complexity)

void build_tables(void)
{
    int r, j, radix, n, col, i;
    
    /* radix_base_table */
    for(radix = 2; radix <= 36; radix++) {
        r = 1;
        for(j = 0; j < digits_per_limb_table[radix - 2]; j++) {
            r *= radix;
        }
        printf(" 0x%08x,", r);
        if ((radix % 4) == 1)
            printf("\n");
    }
    printf("\n");

    /* dtoa_max_digits_table */
    for(radix = 2; radix <= 36; radix++) {
        /* Note: over estimated when the radix is a power of two */
        printf(" %d,", 1 + (int)ceil(53.0 / log2(radix)));
    }
    printf("\n");

    /* atod_max_digits_table */
    for(radix = 2; radix <= 36; radix++) {
        if ((radix & (radix - 1)) == 0) {
            /* 64 bits is more than enough */
            n = (int)floor(64.0 / log2(radix));
        } else {
            n = (int)floor(128.0 / log2(radix));
        }
        printf(" %d,", n);
    }
    printf("\n");

    printf("static const int16_t max_exponent[JS_RADIX_MAX - 1] = {\n");
    col = 0;
    for(radix = 2; radix <= 36; radix++) {
        printf("%5d, ", (int)ceil(1024 / log2(radix)));
        if (++col == 8) {
            col = 0;
            printf("\n");
        }
    }
    printf("\n};\n\n");

    printf("static const int16_t min_exponent[JS_RADIX_MAX - 1] = {\n");
    col = 0; 
    for(radix = 2; radix <= 36; radix++) {
        printf("%5d, ", (int)floor(-1075 / log2(radix)));
        if (++col == 8) {
            col = 0;
            printf("\n");
        }
    }
    printf("\n};\n\n");

    printf("static const uint32_t pow5_table[16] = {\n");
    col = 0; 
    for(i = 2; i <= 17; i++) {
        r = 1;
        for(j = 0; j < i; j++) {
            r *= 5;
        }
        printf("0x%08x, ", r);
        if (++col == 4) {
            col = 0;
            printf("\n");
        }
    }
    printf("\n};\n\n");

    /* high part */
    printf("static const uint8_t pow5h_table[4] = {\n");
    col = 0; 
    for(i = 14; i <= 17; i++) {
        uint64_t r1;
        r1 = 1;
        for(j = 0; j < i; j++) {
            r1 *= 5;
        }
        printf("0x%08x, ", (uint32_t)(r1 >> 32));
        if (++col == 4) {
            col = 0;
            printf("\n");
        }
    }
    printf("\n};\n\n");
}