summaryrefslogtreecommitdiffstats
path: root/opengl/libagl/fixed_asm.S
diff options
context:
space:
mode:
Diffstat (limited to 'opengl/libagl/fixed_asm.S')
-rw-r--r--opengl/libagl/fixed_asm.S65
1 files changed, 0 insertions, 65 deletions
diff --git a/opengl/libagl/fixed_asm.S b/opengl/libagl/fixed_asm.S
deleted file mode 100644
index 6cbc56f..0000000
--- a/opengl/libagl/fixed_asm.S
+++ /dev/null
@@ -1,65 +0,0 @@
-/* libs/opengles/fixed_asm.S
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-
- .text
- .align
-
- .global gglFloatToFixed
- .global gglFloatToFixedFast
-
-
-/*
- * Converts a float to a s15.16 fixed-point number.
- * this doesn't handle floats out of the [-32768, +32768[ range
- * and doesn't performs round-to-nearest.
- * however, it's very fast :-)
- */
-
-gglFloatToFixedFast:
- movs r1, r0, lsl #1 /* remove bit sign */
- mov r2, #0x8E /* 127 + 15 */
- sub r1, r2, r1, lsr #24 /* compute shift */
- mov r2, r0, lsl #8 /* mantissa<<8 */
- orr r2, r2, #0x80000000 /* add the missing 1 */
- mov r0, r2, lsr r1 /* scale to 16.16 */
- rsbcs r0, r0, #0 /* negate if needed */
- bx lr
-
-/*
- * this version rounds-to-nearest and saturates numbers
- * outside the range (but not NaNs).
- */
-
-gglFloatToFixed:
- mov r1, r0, lsl #1 /* remove bit sign */
- mov r2, #0x8E /* 127 + 15 */
- subs r1, r2, r1, lsr #24 /* compute shift */
- bls 0f /* too big */
- mov r2, r0, lsl #8 /* mantissa<<8 */
- orr r2, r2, #0x80000000 /* add the missing 1 */
- mov r3, r0
- movs r0, r2, lsr r1 /* scale to 16.16 */
- addcs r0, r0, #1 /* round-to-nearest */
- tst r3, #0x80000000 /* negative? */
- rsbne r0, r0, #0 /* negate if needed */
- bx lr
-
-0: ands r0, r0, #0x80000000 /* keep only the sign bit */
- moveq r0, #0x7fffffff /* positive, maximum value */
- bx lr
-