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-rw-r--r--libglitter_redistribute_energy_double.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/libglitter_redistribute_energy_double.c b/libglitter_redistribute_energy_double.c
index 6b57c0e..24d6c4a 100644
--- a/libglitter_redistribute_energy_double.c
+++ b/libglitter_redistribute_energy_double.c
@@ -3,12 +3,33 @@
#ifndef TEST
+#if defined(__GNUC__) && !defined(__clang__)
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wfloat-equal"
+#elif defined(__clang__)
+# pragma clang diagnostic push
+# pragma clang diagnostic ignored "-Wfloat-equal"
+#endif
+
+static int
+exactly(double a, double b)
+{
+ return a == b;
+}
+
+#if defined(__GNUC__) && !defined(__clang__)
+# pragma GCC diagnostic pop
+#elif defined(__clang__)
+# pragma clang diagnostic pop
+#endif
+
+
static void
vconvolute(double *restrict raster, size_t rowsize, size_t width, size_t height, size_t kernelsize, const double *kernel)
{
size_t y, x, i;
- if (kernelsize == 3 && kernel[0] == kernel[1] && kernel[1] == kernel[2]) {
+ if (kernelsize == 3 && exactly(kernel[0], kernel[1]) && exactly(kernel[1], kernel[2])) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++)
raster[x] += raster[x + 1 * rowsize];
@@ -50,7 +71,7 @@ hconvolute(double *restrict raster, size_t rowsize, size_t width, size_t height,
{
size_t y, x, i;
- if (kernelsize == 3 && kernel[0] == kernel[1] && kernel[1] == kernel[2]) {
+ if (kernelsize == 3 && exactly(kernel[0], kernel[1]) && exactly(kernel[1], kernel[2])) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
raster[x + 1] += raster[x + 2];