Merge pull request #840 from zeux/cquant

Make meshopt_quantizeHalf/Float extern "C"

Author: zeux

src/meshoptimizer.h

@@ -608,6 +608,27 @@ MESHOPTIMIZER_API void meshopt_spatialSortRemap(unsigned int* destination, const
  */
 MESHOPTIMIZER_EXPERIMENTAL void meshopt_spatialSortTriangles(unsigned int* destination, const unsigned int* indices, size_t index_count, const float* vertex_positions, size_t vertex_count, size_t vertex_positions_stride);
 
+/**
+ * Quantize a float into half-precision (as defined by IEEE-754 fp16) floating point value
+ * Generates +-inf for overflow, preserves NaN, flushes denormals to zero, rounds to nearest
+ * Representable magnitude range: [6e-5; 65504]
+ * Maximum relative reconstruction error: 5e-4
+ */
+MESHOPTIMIZER_API unsigned short meshopt_quantizeHalf(float v);
+
+/**
+ * Quantize a float into a floating point value with a limited number of significant mantissa bits, preserving the IEEE-754 fp32 binary representation
+ * Generates +-inf for overflow, preserves NaN, flushes denormals to zero, rounds to nearest
+ * Assumes N is in a valid mantissa precision range, which is 1..23
+ */
+MESHOPTIMIZER_API float meshopt_quantizeFloat(float v, int N);
+
+/**
+ * Reverse quantization of a half-precision (as defined by IEEE-754 fp16) floating point value
+ * Preserves Inf/NaN, flushes denormals to zero
+ */
+MESHOPTIMIZER_API float meshopt_dequantizeHalf(unsigned short h);
+
 /**
  * Set allocation callbacks
  * These callbacks will be used instead of the default operator new/operator delete for all temporary allocations in the library.
@@ -620,7 +641,7 @@ MESHOPTIMIZER_API void meshopt_setAllocator(void* (MESHOPTIMIZER_ALLOC_CALLCONV*
 } /* extern "C" */
 #endif
 
-/* Quantization into commonly supported data formats */
+/* Quantization into fixed point normalized formats; these are only available as inline C++ functions */
 #ifdef __cplusplus
 /**
  * Quantize a float in [0..1] range into an N-bit fixed point unorm value
@@ -635,27 +656,6 @@ inline int meshopt_quantizeUnorm(float v, int N);
  * Maximum reconstruction error: 1/2^N
  */
 inline int meshopt_quantizeSnorm(float v, int N);
-
-/**
- * Quantize a float into half-precision (as defined by IEEE-754 fp16) floating point value
- * Generates +-inf for overflow, preserves NaN, flushes denormals to zero, rounds to nearest
- * Representable magnitude range: [6e-5; 65504]
- * Maximum relative reconstruction error: 5e-4
- */
-MESHOPTIMIZER_API unsigned short meshopt_quantizeHalf(float v);
-
-/**
- * Quantize a float into a floating point value with a limited number of significant mantissa bits, preserving the IEEE-754 fp32 binary representation
- * Generates +-inf for overflow, preserves NaN, flushes denormals to zero, rounds to nearest
- * Assumes N is in a valid mantissa precision range, which is 1..23
- */
-MESHOPTIMIZER_API float meshopt_quantizeFloat(float v, int N);
-
-/**
- * Reverse quantization of a half-precision (as defined by IEEE-754 fp16) floating point value
- * Preserves Inf/NaN, flushes denormals to zero
- */
-MESHOPTIMIZER_API float meshopt_dequantizeHalf(unsigned short h);
 #endif
 
 /**