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-rw-r--r--source/pdf/pdf-function.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/source/pdf/pdf-function.c b/source/pdf/pdf-function.c
index 1972a10d..a8faae32 100644
--- a/source/pdf/pdf-function.c
+++ b/source/pdf/pdf-function.c
@@ -879,7 +879,7 @@ load_postscript_func(pdf_function *func, pdf_document *doc, pdf_obj *dict, int n
}
static void
-eval_postscript_func(fz_context *ctx, pdf_function *func, float *in, float *out)
+eval_postscript_func(fz_context *ctx, pdf_function *func, const float *in, float *out)
{
ps_stack st;
float x;
@@ -1060,7 +1060,7 @@ interpolate_sample(pdf_function *func, int *scale, int *e0, int *e1, float *efra
}
static void
-eval_sample_func(fz_context *ctx, pdf_function *func, float *in, float *out)
+eval_sample_func(fz_context *ctx, pdf_function *func, const float *in, float *out)
{
int e0[FZ_FN_MAXM], e1[FZ_FN_MAXM], scale[FZ_FN_MAXM];
float efrac[FZ_FN_MAXM];
@@ -1383,7 +1383,7 @@ pdf_free_function_imp(fz_context *ctx, fz_storable *func_)
}
static void
-pdf_eval_function(fz_context *ctx, fz_function *func_, float *in, float *out)
+pdf_eval_function(fz_context *ctx, fz_function *func_, const float *in, float *out)
{
pdf_function *func = (pdf_function *)func_;