diff --git a/src/Makefile.cfg b/src/Makefile.cfg
index cdd4c3c734cb4c3fde2d735903ce7fc4d42065a8..1238050b3441de6c349180a574e38947b85e8347 100644
--- a/src/Makefile.cfg
+++ b/src/Makefile.cfg
@@ -112,9 +112,7 @@ ifndef GCC295
WFLAGS+=-Wno-div-by-zero
endif
#WFLAGS+=-Wsystem-headers
-ifndef ERRORMODE
-#WFLAGS+=-Wfloat-equal
-endif
+WFLAGS+=-Wfloat-equal
#WFLAGS+=-Wtraditional
ifdef VCHELP
WFLAGS+=-Wdeclaration-after-statement
diff --git a/src/command.c b/src/command.c
index 16f18749b091d9999feaf70638deacf3da2a6a52..3183ba70bcb1d80abaead0efabec244781d782f7 100644
--- a/src/command.c
+++ b/src/command.c
@@ -1102,7 +1102,7 @@ static void Setvalue(consvar_t *var, const char *valstr, boolean stealth)
if (var->flags & CV_FLOAT)
{
double d = atof(valstr);
- if (!d && valstr[0] != '0')
+ if (fpclassify(d) == FP_ZERO && valstr[0] != '0')
v = INT32_MIN;
else
v = (INT32)(d * FRACUNIT);
diff --git a/src/hardware/hw_bsp.c b/src/hardware/hw_bsp.c
index 53602cc7f10101453713403514809e069906c292..21fd85a33ce753b248774a66ba06acc4b224ba40 100644
--- a/src/hardware/hw_bsp.c
+++ b/src/hardware/hw_bsp.c
@@ -193,7 +193,7 @@ static polyvertex_t *fracdivline(fdivline_t *bsp, polyvertex_t *v1,
v2dy = bsp->dy;
den = v2dy*v1dx - v2dx*v1dy;
- if (fabs(den) < 1.0E-36f) // avoid checking exactly for 0.0
+ if (fabsf((float)den) < 1.0E-36f) // avoid checking exactly for 0.0
return NULL; // parallel
// first check the frac along the polygon segment,
@@ -235,6 +235,11 @@ static boolean SameVertice (polyvertex_t *p1, polyvertex_t *p2)
return false;
if (p1->y != p2->y)
return false;
+#elif 0
+ if (fabsf( p2->x - p1->x ) > 1.0E-36f )
+ return false;
+ if (fabsf( p2->y - p1->y ) > 1.0E-36f )
+ return false;
#else
#define DIVLINE_VERTEX_DIFF 0.45f
float ep = DIVLINE_VERTEX_DIFF;
diff --git a/src/hardware/hw_draw.c b/src/hardware/hw_draw.c
index 3963fd931f6449cf64573965a500355e40a085e0..40d38d0594b5fb2ee2d5fed00cc6f7e0c85b189b 100644
--- a/src/hardware/hw_draw.c
+++ b/src/hardware/hw_draw.c
@@ -227,14 +227,14 @@ void HWR_DrawFixedPatch(GLPatch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscale,
Z_Free(realpatch);
}
// centre screen
- if ((float)vid.width != (float)BASEVIDWIDTH * dupx)
+ if (fabsf((float)vid.width - (float)BASEVIDWIDTH * dupx) > 1.0E-36f)
{
if (option & V_SNAPTORIGHT)
cx += ((float)vid.width - ((float)BASEVIDWIDTH * dupx));
else if (!(option & V_SNAPTOLEFT))
cx += ((float)vid.width - ((float)BASEVIDWIDTH * dupx))/2;
}
- if ((float)vid.height != (float)BASEVIDHEIGHT * dupy)
+ if (fabsf((float)vid.height - (float)BASEVIDHEIGHT * dupy) > 1.0E-36f)
{
if ((option & (V_SPLITSCREEN|V_SNAPTOBOTTOM)) == (V_SPLITSCREEN|V_SNAPTOBOTTOM))
cy += ((float)vid.height/2 - ((float)BASEVIDHEIGHT/2 * dupy));
@@ -375,14 +375,14 @@ void HWR_DrawCroppedPatch(GLPatch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscal
Z_Free(realpatch);
}
// centre screen
- if ((float)vid.width != (float)BASEVIDWIDTH * dupx)
+ if (fabsf((float)vid.width - (float)BASEVIDWIDTH * dupx) > 1.0E-36f)
{
if (option & V_SNAPTORIGHT)
cx += ((float)vid.width - ((float)BASEVIDWIDTH * dupx));
else if (!(option & V_SNAPTOLEFT))
cx += ((float)vid.width - ((float)BASEVIDWIDTH * dupx))/2;
}
- if ((float)vid.height != (float)BASEVIDHEIGHT * dupy)
+ if (fabsf((float)vid.height - (float)BASEVIDHEIGHT * dupy) > 1.0E-36f)
{
if ((option & (V_SPLITSCREEN|V_SNAPTOBOTTOM)) == (V_SPLITSCREEN|V_SNAPTOBOTTOM))
cy += ((float)vid.height/2 - ((float)BASEVIDHEIGHT/2 * dupy));
@@ -834,14 +834,14 @@ void HWR_DrawFill(INT32 x, INT32 y, INT32 w, INT32 h, INT32 color)
fw *= dupx;
fh *= dupy;
- if ((float)vid.width != (float)BASEVIDWIDTH * dupx)
+ if (fabsf((float)vid.width - (float)BASEVIDWIDTH * dupx) > 1.0E-36f)
{
if (color & V_SNAPTORIGHT)
fx += ((float)vid.width - ((float)BASEVIDWIDTH * dupx));
else if (!(color & V_SNAPTOLEFT))
fx += ((float)vid.width - ((float)BASEVIDWIDTH * dupx)) / 2;
}
- if ((float)vid.height != (float)BASEVIDHEIGHT * dupy)
+ if (fabsf((float)vid.height - (float)BASEVIDHEIGHT * dupy) > 1.0E-36f)
{
// same thing here
if (color & V_SNAPTOBOTTOM)
diff --git a/src/hardware/hw_main.c b/src/hardware/hw_main.c
index db679223d37faee4d1dc889cc6604fd8599c66be..efecac52420b136c8952b8892d6a4222b457f2bd 100644
--- a/src/hardware/hw_main.c
+++ b/src/hardware/hw_main.c
@@ -4137,7 +4137,7 @@ static void HWR_DrawSpriteShadow(gr_vissprite_t *spr, GLPatch_t *gpatch, float t
swallVerts[0].z = swallVerts[3].z = spr->z1;
swallVerts[2].z = swallVerts[1].z = spr->z2;
- if (spr->mobj && this_scale != 1.0f)
+ if (spr->mobj && fabsf(this_scale - 1.0f) > 1.0E-36f)
{
// Always a pixel above the floor, perfectly flat.
swallVerts[0].y = swallVerts[1].y = swallVerts[2].y = swallVerts[3].y = spr->ty - gpatch->topoffset * this_scale - (floorheight+3);
@@ -4305,7 +4305,7 @@ static void HWR_SplitSprite(gr_vissprite_t *spr)
wallVerts[1].z = wallVerts[2].z = spr->z2;
wallVerts[2].y = wallVerts[3].y = spr->ty;
- if (spr->mobj && this_scale != 1.0f)
+ if (spr->mobj && fabsf(this_scale - 1.0f) > 1.0E-36f)
wallVerts[0].y = wallVerts[1].y = spr->ty - gpatch->height * this_scale;
else
wallVerts[0].y = wallVerts[1].y = spr->ty - gpatch->height;
@@ -4595,7 +4595,7 @@ static void HWR_DrawSprite(gr_vissprite_t *spr)
wallVerts[0].x = wallVerts[3].x = spr->x1;
wallVerts[2].x = wallVerts[1].x = spr->x2;
wallVerts[2].y = wallVerts[3].y = spr->ty;
- if (spr->mobj && this_scale != 1.0f)
+ if (spr->mobj && fabsf(this_scale - 1.0f) > 1.0E-36f)
wallVerts[0].y = wallVerts[1].y = spr->ty - gpatch->height * this_scale;
else
wallVerts[0].y = wallVerts[1].y = spr->ty - gpatch->height;
@@ -4851,7 +4851,7 @@ static void HWR_SortVisSprites(void)
best = ds;
}
// order visprites of same scale by dispoffset, smallest first
- else if (ds->tz == bestdist && ds->dispoffset < bestdispoffset)
+ else if (fabsf(ds->tz - bestdist) < 1.0E-36f && ds->dispoffset < bestdispoffset)
{
bestdispoffset = ds->dispoffset;
best = ds;
@@ -5772,7 +5772,7 @@ void HWR_SetViewSize(void)
gr_viewwindowx = (vid.width - gr_viewwidth) / 2;
gr_windowcenterx = (float)(vid.width / 2);
- if (gr_viewwidth == vid.width)
+ if (fabsf(gr_viewwidth - vid.width) < 1.0E-36f)
{
gr_baseviewwindowy = 0;
gr_basewindowcentery = gr_viewheight / 2; // window top left corner at 0,0
diff --git a/src/hardware/r_opengl/r_opengl.c b/src/hardware/r_opengl/r_opengl.c
index 2d9f4219253796b19275a9bdb15e79a3a1d3989a..b324fced902cf77110b92427c6d98808896eda89 100644
--- a/src/hardware/r_opengl/r_opengl.c
+++ b/src/hardware/r_opengl/r_opengl.c
@@ -602,7 +602,8 @@ static void GLPerspective(GLdouble fovy, GLdouble aspect)
const GLdouble deltaZ = zFar - zNear;
GLdouble cotangent;
- if ((deltaZ == 0.0f) || (sine == 0.0f) || (aspect == 0.0f)) {
+ if ((fabsf((float)deltaZ) < 1.0E-36f) || fpclassify(sine) == FP_ZERO || fpclassify(aspect) == FP_ZERO)
+ {
return;
}
cotangent = cos(radians) / sine;
@@ -641,7 +642,7 @@ static void GLProject(GLdouble objX, GLdouble objY, GLdouble objZ,
out[2] * projMatrix[2*4+i] +
out[3] * projMatrix[3*4+i];
}
- if (in[3] == 0.0f) return;
+ if (fpclassify(in[3]) == FP_ZERO) return;
in[0] /= in[3];
in[1] /= in[3];
in[2] /= in[3];
@@ -1986,7 +1987,7 @@ static void DrawMD2Ex(INT32 *gl_cmd_buffer, md2_frame_t *frame, INT32 duration,
pglTexCoord2f(s, t);
- if (!nextframe || pol == 0.0f)
+ if (!nextframe || fpclassify(pol) == FP_ZERO)
{
pglNormal3f(frame->vertices[pindex].normal[0],
frame->vertices[pindex].normal[1],
@@ -2055,6 +2056,7 @@ EXPORT void HWRAPI(SetTransform) (FTransform *stransform)
pglLoadIdentity();
if (stransform)
{
+ boolean fovx90;
// keep a trace of the transformation for md2
memcpy(&md2_transform, stransform, sizeof (md2_transform));
@@ -2069,7 +2071,8 @@ EXPORT void HWRAPI(SetTransform) (FTransform *stransform)
pglMatrixMode(GL_PROJECTION);
pglLoadIdentity();
- special_splitscreen = (stransform->splitscreen && stransform->fovxangle == 90.0f);
+ fovx90 = stransform->fovxangle > 0.0f && fabsf(stransform->fovxangle - 90.0f) < 0.5f;
+ special_splitscreen = (stransform->splitscreen && fovx90);
if (special_splitscreen)
GLPerspective(53.13l, 2*ASPECT_RATIO); // 53.13 = 2*atan(0.5)
else
diff --git a/src/r_data.c b/src/r_data.c
index 453ef69ec2cf971c452032c92946ed25c8cccb83..e0b9a8147f858bd2c4ae740202da6ebd60175b6d 100644
--- a/src/r_data.c
+++ b/src/r_data.c
@@ -1220,7 +1220,7 @@ INT32 R_CreateColormap(char *p1, char *p2, char *p3)
continue;
if (maskcolor == extra_colormaps[i].maskcolor
&& fadecolor == extra_colormaps[i].fadecolor
- && (float)maskamt == (float)extra_colormaps[i].maskamt
+ && fabsf((float)(maskamt - extra_colormaps[i].maskamt)) < 1.0E-36f
&& fadestart == extra_colormaps[i].fadestart
&& fadeend == extra_colormaps[i].fadeend
&& fog == extra_colormaps[i].fog)
diff --git a/src/sdl/mixer_sound.c b/src/sdl/mixer_sound.c
index 083ef00540ea0de736ae42d3b91ffb2aff4f3ee4..6e90a6e06d323966cd45cae4d3a58973288ee06a 100644
--- a/src/sdl/mixer_sound.c
+++ b/src/sdl/mixer_sound.c
@@ -765,6 +765,7 @@ void I_UnloadSong(void)
boolean I_PlaySong(boolean looping)
{
+ boolean lpz = fpclassify(loop_point) == FP_ZERO;
#ifdef HAVE_LIBGME
if (gme)
{
@@ -778,14 +779,15 @@ boolean I_PlaySong(boolean looping)
if (!music)
return false;
- if (Mix_PlayMusic(music, looping && loop_point == 0.0f ? -1 : 0) == -1)
+
+ if (Mix_PlayMusic(music, looping && lpz ? -1 : 0) == -1)
{
CONS_Alert(CONS_ERROR, "Mix_PlayMusic: %s\n", Mix_GetError());
return false;
}
Mix_VolumeMusic((UINT32)music_volume*128/31);
- if (loop_point != 0.0f)
+ if (!lpz)
Mix_HookMusicFinished(music_loop);
return true;
}
diff --git a/src/win32/win_vid.c b/src/win32/win_vid.c
index a9dd097b3f1bc1f7025a022eb4036f0f32cd6168..cca7810b3b76209f117b35798fa08bceebac758b 100644
--- a/src/win32/win_vid.c
+++ b/src/win32/win_vid.c
@@ -996,7 +996,7 @@ static INT32 WINAPI VID_SetDirectDrawMode(viddef_t *lvid, vmode_t *currentmode)
// but rather render to memory bitmap buffer
lvid->direct = NULL;
- if (!cv_stretch.value && (float)vid.width/vid.height != ((float)BASEVIDWIDTH/BASEVIDHEIGHT))
+ if (!cv_stretch.value && fabsf((float)vid.width/vid.height - ((float)BASEVIDWIDTH/BASEVIDHEIGHT)) > 1.0E-36f)
vid.height = (int)(vid.width * ((float)BASEVIDHEIGHT/BASEVIDWIDTH));// Adjust the height to match
return 1;