diff --git a/spirv_cross_c.cpp b/spirv_cross_c.cpp
index c8ebbe4c..2e2bb901 100644
--- a/spirv_cross_c.cpp
+++ b/spirv_cross_c.cpp
@@ -2535,6 +2535,51 @@ spvc_type_id spvc_constant_get_type(spvc_constant constant)
 	return constant->constant_type;
 }
 
+void spvc_constant_set_scalar_fp16(spvc_constant constant, unsigned column, unsigned row, float value)
+{
+	constant->m.c[column].r[row].f32 = value;
+}
+
+void spvc_constant_set_scalar_fp32(spvc_constant constant, unsigned column, unsigned row, float value)
+{
+	constant->m.c[column].r[row].f32 = value;
+}
+
+void spvc_constant_set_scalar_fp64(spvc_constant constant, unsigned column, unsigned row, double value)
+{
+	constant->m.c[column].r[row].f64 = value;
+}
+
+void spvc_constant_set_scalar_u32(spvc_constant constant, unsigned column, unsigned row, unsigned value)
+{
+	constant->m.c[column].r[row].u32 = value;
+}
+
+void spvc_constant_set_scalar_i32(spvc_constant constant, unsigned column, unsigned row, int value)
+{
+	constant->m.c[column].r[row].i32 = value;
+}
+
+void spvc_constant_set_scalar_u16(spvc_constant constant, unsigned column, unsigned row, unsigned value)
+{
+	constant->m.c[column].r[row].u32 = uint32_t(value);
+}
+
+void spvc_constant_set_scalar_i16(spvc_constant constant, unsigned column, unsigned row, int value)
+{
+	constant->m.c[column].r[row].u32 = uint32_t(value);
+}
+
+void spvc_constant_set_scalar_u8(spvc_constant constant, unsigned column, unsigned row, unsigned value)
+{
+	constant->m.c[column].r[row].u32 = uint32_t(value);
+}
+
+void spvc_constant_set_scalar_i8(spvc_constant constant, unsigned column, unsigned row, int value)
+{
+	constant->m.c[column].r[row].u32 = uint32_t(value);
+}
+
 spvc_bool spvc_compiler_get_binary_offset_for_decoration(spvc_compiler compiler, spvc_variable_id id,
                                                          SpvDecoration decoration,
                                                          unsigned *word_offset)
diff --git a/spirv_cross_c.h b/spirv_cross_c.h
index e39ff2c4..95d4c97b 100644
--- a/spirv_cross_c.h
+++ b/spirv_cross_c.h
@@ -1049,6 +1049,19 @@ SPVC_PUBLIC_API int spvc_constant_get_scalar_i8(spvc_constant constant, unsigned
 SPVC_PUBLIC_API void spvc_constant_get_subconstants(spvc_constant constant, const spvc_constant_id **constituents, size_t *count);
 SPVC_PUBLIC_API spvc_type_id spvc_constant_get_type(spvc_constant constant);
 
+/*
+ * C implementation of the C++ api.
+ */
+SPVC_PUBLIC_API void spvc_constant_set_scalar_fp16(spvc_constant constant, unsigned column, unsigned row, float value);
+SPVC_PUBLIC_API void spvc_constant_set_scalar_fp32(spvc_constant constant, unsigned column, unsigned row, float value);
+SPVC_PUBLIC_API void spvc_constant_set_scalar_fp64(spvc_constant constant, unsigned column, unsigned row, double value);
+SPVC_PUBLIC_API void spvc_constant_set_scalar_u32(spvc_constant constant, unsigned column, unsigned row, unsigned value);
+SPVC_PUBLIC_API void spvc_constant_set_scalar_i32(spvc_constant constant, unsigned column, unsigned row, int value);
+SPVC_PUBLIC_API void spvc_constant_set_scalar_u16(spvc_constant constant, unsigned column, unsigned row, unsigned value);
+SPVC_PUBLIC_API void spvc_constant_set_scalar_i16(spvc_constant constant, unsigned column, unsigned row, int value);
+SPVC_PUBLIC_API void spvc_constant_set_scalar_u8(spvc_constant constant, unsigned column, unsigned row, unsigned value);
+SPVC_PUBLIC_API void spvc_constant_set_scalar_i8(spvc_constant constant, unsigned column, unsigned row, int value);
+
 /*
  * Misc reflection
  * Maps to C++ API.