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Fix sign-conversion warnings reported by Clang7
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@ -464,14 +464,14 @@ FMT_FUNC fp get_cached_power(int min_exponent, int &pow10_exponent) {
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}
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FMT_FUNC bool grisu2_round(
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char *buf, size_t &size, size_t max_digits, uint64_t delta,
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char *buf, ptrdiff_t &size, size_t max_digits, uint64_t delta,
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uint64_t remainder, uint64_t exp, uint64_t diff, int &exp10) {
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while (remainder < diff && delta - remainder >= exp &&
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(remainder + exp < diff || diff - remainder > remainder + exp - diff)) {
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--buf[size - 1];
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remainder += exp;
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}
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if (size > max_digits) {
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if (size > static_cast<ptrdiff_t>(max_digits)) {
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--size;
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++exp10;
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if (buf[size] >= '5')
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@ -482,7 +482,7 @@ FMT_FUNC bool grisu2_round(
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// Generates output using Grisu2 digit-gen algorithm.
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FMT_FUNC bool grisu2_gen_digits(
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char *buf, size_t &size, uint32_t hi, uint64_t lo, int &exp,
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char *buf, ptrdiff_t &size, uint32_t hi, uint64_t lo, int &exp,
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uint64_t delta, const fp &one, const fp &diff, size_t max_digits) {
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// Generate digits for the most significant part (hi).
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while (exp > 0) {
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@ -507,7 +507,7 @@ FMT_FUNC bool grisu2_gen_digits(
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buf[size++] = static_cast<char>('0' + digit);
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--exp;
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uint64_t remainder = (static_cast<uint64_t>(hi) << -one.e) + lo;
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if (remainder <= delta || size > max_digits) {
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if (remainder <= delta || size > static_cast<ptrdiff_t>(max_digits)) {
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return grisu2_round(
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buf, size, max_digits, delta, remainder,
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static_cast<uint64_t>(data::POWERS_OF_10_32[exp]) << -one.e,
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@ -523,7 +523,7 @@ FMT_FUNC bool grisu2_gen_digits(
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buf[size++] = static_cast<char>('0' + digit);
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lo &= one.f - 1;
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--exp;
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if (lo < delta || size > max_digits) {
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if (lo < delta || size > static_cast<ptrdiff_t>(max_digits)) {
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return grisu2_round(buf, size, max_digits, delta, lo, one.f,
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diff.f * data::POWERS_OF_10_32[-exp], exp);
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}
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@ -751,7 +751,7 @@ FMT_FUNC typename std::enable_if<sizeof(Double) == sizeof(uint64_t), bool>::type
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// lo (p2 in Grisu) contains the least significants digits of scaled_upper.
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// lo = supper % one.
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uint64_t lo = upper.f & (one.f - 1);
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size_t size = 0;
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ptrdiff_t size = 0;
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if (!grisu2_gen_digits(buf.data(), size, hi, lo, exp, delta, one, diff,
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params.num_digits)) {
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buf.clear();
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