--- goffice/math/go-ryu.c	2023-05-20 20:02:02.000000000 -0300
+++ goffice/math/go-ryu.c.patched	2023-12-27 19:28:35.623167312 -0400
@@ -3,55 +3,8 @@
 #define bool int
 
 #include "go-ryu.h"
-// File ryu.h imported from ryu
-// Copyright 2018 Ulf Adams
-//
-// The contents of this file may be used under the terms of the Apache License,
-// Version 2.0.
-//
-//    (See accompanying file LICENSE-Apache or copy at
-//     http://www.apache.org/licenses/LICENSE-2.0)
-//
-// Alternatively, the contents of this file may be used under the terms of
-// the Boost Software License, Version 1.0.
-//    (See accompanying file LICENSE-Boost or copy at
-//     https://www.boost.org/LICENSE_1_0.txt)
-//
-// Unless required by applicable law or agreed to in writing, this software
-// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-// KIND, either express or implied.
-#ifndef RYU_H
-#define RYU_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include <inttypes.h>
 
-int go_ryu_d2s_buffered_n(double f, char* result);
-void go_ryu_d2s_buffered(double f, char* result);
-char* go_ryu_d2s(double f);
-
-int go_ryu_f2s_buffered_n(float f, char* result);
-void go_ryu_f2s_buffered(float f, char* result);
-char* go_ryu_f2s(float f);
-
-int go_ryu_d2fixed_buffered_n(double d, uint32_t precision, char* result);
-void go_ryu_d2fixed_buffered(double d, uint32_t precision, char* result);
-char* go_ryu_d2fixed(double d, uint32_t precision);
-
-int go_ryu_d2exp_buffered_n(double d, uint32_t precision, char* result);
-void go_ryu_d2exp_buffered(double d, uint32_t precision, char* result);
-char* go_ryu_d2exp(double d, uint32_t precision);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // RYU_H
-// End of file ryu.h imported from ryu
-
 // File common.h imported from ryu
 // Copyright 2018 Ulf Adams
 //
@@ -1242,20 +1195,25 @@
   return to_chars(v, ieeeSign, result);
 }
 
-void go_ryu_d2s_buffered(double f, char* result) {
+#if 0
+static void go_ryu_d2s_buffered(double f, char* result) {
   const int index = go_ryu_d2s_buffered_n(f, result);
 
   // Terminate the string.
   result[index] = '\0';
 }
+#endif
 
-char* go_ryu_d2s(double f) {
+#if 0
+static char* go_ryu_d2s(double f) {
   char* const result = (char*) malloc(25);
   go_ryu_d2s_buffered(f, result);
   return result;
 }
+#endif
 // End of file d2s.c imported from ryu
 
+#ifdef GOFFICE_WITH_LONG_DOUBLE
 // File ryu_generic_128.h imported from ryu
 // Copyright 2018 Ulf Adams
 //
@@ -1303,16 +1261,20 @@
   bool sign;
 };
 
-struct floating_decimal_128 go_ryu_float_to_fd128(float f);
-struct floating_decimal_128 go_ryu_double_to_fd128(double d);
+#if 0
+static struct floating_decimal_128 go_ryu_float_to_fd128(float f);
+#endif
+#if 0
+static struct floating_decimal_128 go_ryu_double_to_fd128(double d);
+#endif
 
 // According to wikipedia (https://en.wikipedia.org/wiki/Long_double), this likely only works on
 // x86 with specific compilers (clang?). May need an ifdef.
-struct floating_decimal_128 go_ryu_long_double_to_fd128(long double d);
+static struct floating_decimal_128 go_ryu_long_double_to_fd128(long double d);
 
 // Converts the given binary floating point number to the shortest decimal floating point number
 // that still accurately represents it.
-struct floating_decimal_128 go_ryu_generic_binary_to_decimal(
+static struct floating_decimal_128 go_ryu_generic_binary_to_decimal(
     const __uint128_t bits, const uint32_t mantissaBits, const uint32_t exponentBits, const bool explicitLeadingBit);
 
 // Converts the given decimal floating point number to a string, writing to result, and returning
@@ -1322,7 +1284,7 @@
 // Maximal char buffer requirement:
 // sign + mantissa digits + decimal dot + 'E' + exponent sign + exponent digits
 // = 1 + 39 + 1 + 1 + 1 + 10 = 53
-int go_ryu_generic_to_chars(const struct floating_decimal_128 v, char* const result);
+static int go_ryu_generic_to_chars(const struct floating_decimal_128 v, char* const result);
 
 #ifdef __cplusplus
 }
@@ -1330,7 +1292,9 @@
 
 #endif // RYU_GENERIC_128_H
 // End of file ryu_generic_128.h imported from ryu
+#endif // GOFFICE_WITH_LONG_DOUBLE
 
+#ifdef GOFFICE_WITH_LONG_DOUBLE
 // File generic_128.h imported from ryu
 // Copyright 2018 Ulf Adams
 //
@@ -1852,7 +1816,9 @@
 
 #endif // RYU_GENERIC128_H
 // End of file generic_128.h imported from ryu
+#endif // GOFFICE_WITH_LONG_DOUBLE
 
+#ifdef GOFFICE_WITH_LONG_DOUBLE
 // File generic_128.c imported from ryu
 // Copyright 2018 Ulf Adams
 //
@@ -1903,25 +1869,29 @@
 #define FLOAT_MANTISSA_BITS 23
 #define FLOAT_EXPONENT_BITS 8
 
-struct floating_decimal_128 go_ryu_float_to_fd128(float f) {
+#if 0
+static struct floating_decimal_128 go_ryu_float_to_fd128(float f) {
   uint32_t bits = 0;
   memcpy(&bits, &f, sizeof(float));
   return go_ryu_generic_binary_to_decimal(bits, FLOAT_MANTISSA_BITS, FLOAT_EXPONENT_BITS, false);
 }
+#endif
 
 #define DOUBLE_MANTISSA_BITS 52
 #define DOUBLE_EXPONENT_BITS 11
 
-struct floating_decimal_128 go_ryu_double_to_fd128(double d) {
+#if 0
+static struct floating_decimal_128 go_ryu_double_to_fd128(double d) {
   uint64_t bits = 0;
   memcpy(&bits, &d, sizeof(double));
   return go_ryu_generic_binary_to_decimal(bits, DOUBLE_MANTISSA_BITS, DOUBLE_EXPONENT_BITS, false);
 }
+#endif
 
 #define LONG_DOUBLE_MANTISSA_BITS 64
 #define LONG_DOUBLE_EXPONENT_BITS 15
 
-struct floating_decimal_128 go_ryu_long_double_to_fd128(long double d) {
+static struct floating_decimal_128 go_ryu_long_double_to_fd128(long double d) {
   uint128_t bits = 0;
   memcpy(&bits, &d, sizeof(long double));
 #ifdef RYU_DEBUG
@@ -1934,7 +1904,7 @@
   return go_ryu_generic_binary_to_decimal(bits, LONG_DOUBLE_MANTISSA_BITS, LONG_DOUBLE_EXPONENT_BITS, true);
 }
 
-struct floating_decimal_128 go_ryu_generic_binary_to_decimal(
+static struct floating_decimal_128 go_ryu_generic_binary_to_decimal(
     const uint128_t bits, const uint32_t mantissaBits, const uint32_t exponentBits, const bool explicitLeadingBit) {
 #ifdef RYU_DEBUG
   printf("IN=");
@@ -2147,7 +2117,7 @@
   return fd.sign + 8;
 }
 
-int go_ryu_generic_to_chars(const struct floating_decimal_128 v, char* const result) {
+static int go_ryu_generic_to_chars(const struct floating_decimal_128 v, char* const result) {
   if (v.exponent == FD128_EXCEPTIONAL_EXPONENT) {
     return copy_special_strl(result, v);
   }
@@ -2200,9 +2170,12 @@
   return index;
 }
 // End of file generic_128.c imported from ryu
+#endif // GOFFICE_WITH_LONG_DOUBLE
 
 
+#ifdef GOFFICE_WITH_LONG_DOUBLE
 int go_ryu_ld2s_buffered_n (long double d, char *dst) {
   struct floating_decimal_128 fd128 = go_ryu_long_double_to_fd128(d);
   return go_ryu_generic_to_chars(fd128, dst);
 }
+#endif