From f9b1e5241facc8cf255c258082d5cb5b04783e93 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 4 Mar 2003 16:33:53 +0000
Subject: added _mesa_inv_sqrtf() and INV_SQRTF() (Josh Vanderhoof)

---
 src/mesa/swrast/s_aalinetemp.h | 4 ++--
 src/mesa/swrast/s_nvfragprog.c | 5 ++---
 src/mesa/swrast/s_span.c       | 6 +++---
 3 files changed, 7 insertions(+), 8 deletions(-)

(limited to 'src/mesa/swrast')

diff --git a/src/mesa/swrast/s_aalinetemp.h b/src/mesa/swrast/s_aalinetemp.h
index 529da48110..9850ff9ac5 100644
--- a/src/mesa/swrast/s_aalinetemp.h
+++ b/src/mesa/swrast/s_aalinetemp.h
@@ -1,4 +1,4 @@
-/* $Id: s_aalinetemp.h,v 1.22 2003/02/21 21:00:27 brianp Exp $ */
+/* $Id: s_aalinetemp.h,v 1.23 2003/03/04 16:34:02 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -132,7 +132,7 @@ NAME(line)(GLcontext *ctx, const SWvertex *v0, const SWvertex *v1)
    line.y1 = v1->win[1];
    line.dx = line.x1 - line.x0;
    line.dy = line.y1 - line.y0;
-   line.len = (GLfloat) sqrt(line.dx * line.dx + line.dy * line.dy);
+   line.len = SQRTF(line.dx * line.dx + line.dy * line.dy);
    line.halfWidth = 0.5F * ctx->Line.Width;
 
    if (line.len == 0.0 || IS_INF_OR_NAN(line.len))
diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c
index 97f65c0479..147b5248d4 100644
--- a/src/mesa/swrast/s_nvfragprog.c
+++ b/src/mesa/swrast/s_nvfragprog.c
@@ -1,4 +1,4 @@
-/* $Id: s_nvfragprog.c,v 1.5 2003/03/01 01:50:26 brianp Exp $ */
+/* $Id: s_nvfragprog.c,v 1.6 2003/03/04 16:34:03 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -582,8 +582,7 @@ execute_program(GLcontext *ctx, const struct fragment_program *program)
             {
                GLfloat a[4], result[4];
                fetch_vector1( &inst->SrcReg[0], machine, a );
-               result[0] = result[1] = result[2] = result[3]
-                  = 1.0F / SQRTF(a[0]);
+               result[0] = result[1] = result[2] = result[3] = INV_SQRTF(a[0]);
                store_vector4( inst, machine, result );
             }
             break;
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index d408151803..2106b87c5b 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1,4 +1,4 @@
-/* $Id: s_span.c,v 1.56 2003/03/01 01:50:26 brianp Exp $ */
+/* $Id: s_span.c,v 1.57 2003/03/04 16:34:03 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -309,8 +309,8 @@ compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy,
    GLfloat dvdx = texH * ((t + dtdx) / (q + dqdx) - t * invQ);
    GLfloat dudy = texW * ((s + dsdy) / (q + dqdy) - s * invQ);
    GLfloat dvdy = texH * ((t + dtdy) / (q + dqdy) - t * invQ);
-   GLfloat x = sqrt(dudx * dudx + dvdx * dvdx);
-   GLfloat y = sqrt(dudy * dudy + dvdy * dvdy);
+   GLfloat x = SQRTF(dudx * dudx + dvdx * dvdx);
+   GLfloat y = SQRTF(dudy * dudy + dvdy * dvdy);
    GLfloat rho = MAX2(x, y);
    GLfloat lambda = LOG2(rho);
    return lambda;
-- 
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