| /* |
| * Copyright 2025 Valve Corporation |
| * SPDX-License-Identifier: MIT |
| */ |
| |
| |
| #include <math.h> |
| #include <gtest/gtest.h> |
| |
| #include "util/float8.h" |
| #include "u_math.h" |
| |
| /* Navi48 output. */ |
| static const uint32_t e4m3fn_lut[256] = { |
| 0x0, /* 0x0 */ |
| 0x3b000000, /* 0x1 */ |
| 0x3b800000, /* 0x2 */ |
| 0x3bc00000, /* 0x3 */ |
| 0x3c000000, /* 0x4 */ |
| 0x3c200000, /* 0x5 */ |
| 0x3c400000, /* 0x6 */ |
| 0x3c600000, /* 0x7 */ |
| 0x3c800000, /* 0x8 */ |
| 0x3c900000, /* 0x9 */ |
| 0x3ca00000, /* 0xa */ |
| 0x3cb00000, /* 0xb */ |
| 0x3cc00000, /* 0xc */ |
| 0x3cd00000, /* 0xd */ |
| 0x3ce00000, /* 0xe */ |
| 0x3cf00000, /* 0xf */ |
| 0x3d000000, /* 0x10 */ |
| 0x3d100000, /* 0x11 */ |
| 0x3d200000, /* 0x12 */ |
| 0x3d300000, /* 0x13 */ |
| 0x3d400000, /* 0x14 */ |
| 0x3d500000, /* 0x15 */ |
| 0x3d600000, /* 0x16 */ |
| 0x3d700000, /* 0x17 */ |
| 0x3d800000, /* 0x18 */ |
| 0x3d900000, /* 0x19 */ |
| 0x3da00000, /* 0x1a */ |
| 0x3db00000, /* 0x1b */ |
| 0x3dc00000, /* 0x1c */ |
| 0x3dd00000, /* 0x1d */ |
| 0x3de00000, /* 0x1e */ |
| 0x3df00000, /* 0x1f */ |
| 0x3e000000, /* 0x20 */ |
| 0x3e100000, /* 0x21 */ |
| 0x3e200000, /* 0x22 */ |
| 0x3e300000, /* 0x23 */ |
| 0x3e400000, /* 0x24 */ |
| 0x3e500000, /* 0x25 */ |
| 0x3e600000, /* 0x26 */ |
| 0x3e700000, /* 0x27 */ |
| 0x3e800000, /* 0x28 */ |
| 0x3e900000, /* 0x29 */ |
| 0x3ea00000, /* 0x2a */ |
| 0x3eb00000, /* 0x2b */ |
| 0x3ec00000, /* 0x2c */ |
| 0x3ed00000, /* 0x2d */ |
| 0x3ee00000, /* 0x2e */ |
| 0x3ef00000, /* 0x2f */ |
| 0x3f000000, /* 0x30 */ |
| 0x3f100000, /* 0x31 */ |
| 0x3f200000, /* 0x32 */ |
| 0x3f300000, /* 0x33 */ |
| 0x3f400000, /* 0x34 */ |
| 0x3f500000, /* 0x35 */ |
| 0x3f600000, /* 0x36 */ |
| 0x3f700000, /* 0x37 */ |
| 0x3f800000, /* 0x38 */ |
| 0x3f900000, /* 0x39 */ |
| 0x3fa00000, /* 0x3a */ |
| 0x3fb00000, /* 0x3b */ |
| 0x3fc00000, /* 0x3c */ |
| 0x3fd00000, /* 0x3d */ |
| 0x3fe00000, /* 0x3e */ |
| 0x3ff00000, /* 0x3f */ |
| 0x40000000, /* 0x40 */ |
| 0x40100000, /* 0x41 */ |
| 0x40200000, /* 0x42 */ |
| 0x40300000, /* 0x43 */ |
| 0x40400000, /* 0x44 */ |
| 0x40500000, /* 0x45 */ |
| 0x40600000, /* 0x46 */ |
| 0x40700000, /* 0x47 */ |
| 0x40800000, /* 0x48 */ |
| 0x40900000, /* 0x49 */ |
| 0x40a00000, /* 0x4a */ |
| 0x40b00000, /* 0x4b */ |
| 0x40c00000, /* 0x4c */ |
| 0x40d00000, /* 0x4d */ |
| 0x40e00000, /* 0x4e */ |
| 0x40f00000, /* 0x4f */ |
| 0x41000000, /* 0x50 */ |
| 0x41100000, /* 0x51 */ |
| 0x41200000, /* 0x52 */ |
| 0x41300000, /* 0x53 */ |
| 0x41400000, /* 0x54 */ |
| 0x41500000, /* 0x55 */ |
| 0x41600000, /* 0x56 */ |
| 0x41700000, /* 0x57 */ |
| 0x41800000, /* 0x58 */ |
| 0x41900000, /* 0x59 */ |
| 0x41a00000, /* 0x5a */ |
| 0x41b00000, /* 0x5b */ |
| 0x41c00000, /* 0x5c */ |
| 0x41d00000, /* 0x5d */ |
| 0x41e00000, /* 0x5e */ |
| 0x41f00000, /* 0x5f */ |
| 0x42000000, /* 0x60 */ |
| 0x42100000, /* 0x61 */ |
| 0x42200000, /* 0x62 */ |
| 0x42300000, /* 0x63 */ |
| 0x42400000, /* 0x64 */ |
| 0x42500000, /* 0x65 */ |
| 0x42600000, /* 0x66 */ |
| 0x42700000, /* 0x67 */ |
| 0x42800000, /* 0x68 */ |
| 0x42900000, /* 0x69 */ |
| 0x42a00000, /* 0x6a */ |
| 0x42b00000, /* 0x6b */ |
| 0x42c00000, /* 0x6c */ |
| 0x42d00000, /* 0x6d */ |
| 0x42e00000, /* 0x6e */ |
| 0x42f00000, /* 0x6f */ |
| 0x43000000, /* 0x70 */ |
| 0x43100000, /* 0x71 */ |
| 0x43200000, /* 0x72 */ |
| 0x43300000, /* 0x73 */ |
| 0x43400000, /* 0x74 */ |
| 0x43500000, /* 0x75 */ |
| 0x43600000, /* 0x76 */ |
| 0x43700000, /* 0x77 */ |
| 0x43800000, /* 0x78 */ |
| 0x43900000, /* 0x79 */ |
| 0x43a00000, /* 0x7a */ |
| 0x43b00000, /* 0x7b */ |
| 0x43c00000, /* 0x7c */ |
| 0x43d00000, /* 0x7d */ |
| 0x43e00000, /* 0x7e */ |
| 0xffc00000, /* 0x7f */ |
| 0x80000000, /* 0x80 */ |
| 0xbb000000, /* 0x81 */ |
| 0xbb800000, /* 0x82 */ |
| 0xbbc00000, /* 0x83 */ |
| 0xbc000000, /* 0x84 */ |
| 0xbc200000, /* 0x85 */ |
| 0xbc400000, /* 0x86 */ |
| 0xbc600000, /* 0x87 */ |
| 0xbc800000, /* 0x88 */ |
| 0xbc900000, /* 0x89 */ |
| 0xbca00000, /* 0x8a */ |
| 0xbcb00000, /* 0x8b */ |
| 0xbcc00000, /* 0x8c */ |
| 0xbcd00000, /* 0x8d */ |
| 0xbce00000, /* 0x8e */ |
| 0xbcf00000, /* 0x8f */ |
| 0xbd000000, /* 0x90 */ |
| 0xbd100000, /* 0x91 */ |
| 0xbd200000, /* 0x92 */ |
| 0xbd300000, /* 0x93 */ |
| 0xbd400000, /* 0x94 */ |
| 0xbd500000, /* 0x95 */ |
| 0xbd600000, /* 0x96 */ |
| 0xbd700000, /* 0x97 */ |
| 0xbd800000, /* 0x98 */ |
| 0xbd900000, /* 0x99 */ |
| 0xbda00000, /* 0x9a */ |
| 0xbdb00000, /* 0x9b */ |
| 0xbdc00000, /* 0x9c */ |
| 0xbdd00000, /* 0x9d */ |
| 0xbde00000, /* 0x9e */ |
| 0xbdf00000, /* 0x9f */ |
| 0xbe000000, /* 0xa0 */ |
| 0xbe100000, /* 0xa1 */ |
| 0xbe200000, /* 0xa2 */ |
| 0xbe300000, /* 0xa3 */ |
| 0xbe400000, /* 0xa4 */ |
| 0xbe500000, /* 0xa5 */ |
| 0xbe600000, /* 0xa6 */ |
| 0xbe700000, /* 0xa7 */ |
| 0xbe800000, /* 0xa8 */ |
| 0xbe900000, /* 0xa9 */ |
| 0xbea00000, /* 0xaa */ |
| 0xbeb00000, /* 0xab */ |
| 0xbec00000, /* 0xac */ |
| 0xbed00000, /* 0xad */ |
| 0xbee00000, /* 0xae */ |
| 0xbef00000, /* 0xaf */ |
| 0xbf000000, /* 0xb0 */ |
| 0xbf100000, /* 0xb1 */ |
| 0xbf200000, /* 0xb2 */ |
| 0xbf300000, /* 0xb3 */ |
| 0xbf400000, /* 0xb4 */ |
| 0xbf500000, /* 0xb5 */ |
| 0xbf600000, /* 0xb6 */ |
| 0xbf700000, /* 0xb7 */ |
| 0xbf800000, /* 0xb8 */ |
| 0xbf900000, /* 0xb9 */ |
| 0xbfa00000, /* 0xba */ |
| 0xbfb00000, /* 0xbb */ |
| 0xbfc00000, /* 0xbc */ |
| 0xbfd00000, /* 0xbd */ |
| 0xbfe00000, /* 0xbe */ |
| 0xbff00000, /* 0xbf */ |
| 0xc0000000, /* 0xc0 */ |
| 0xc0100000, /* 0xc1 */ |
| 0xc0200000, /* 0xc2 */ |
| 0xc0300000, /* 0xc3 */ |
| 0xc0400000, /* 0xc4 */ |
| 0xc0500000, /* 0xc5 */ |
| 0xc0600000, /* 0xc6 */ |
| 0xc0700000, /* 0xc7 */ |
| 0xc0800000, /* 0xc8 */ |
| 0xc0900000, /* 0xc9 */ |
| 0xc0a00000, /* 0xca */ |
| 0xc0b00000, /* 0xcb */ |
| 0xc0c00000, /* 0xcc */ |
| 0xc0d00000, /* 0xcd */ |
| 0xc0e00000, /* 0xce */ |
| 0xc0f00000, /* 0xcf */ |
| 0xc1000000, /* 0xd0 */ |
| 0xc1100000, /* 0xd1 */ |
| 0xc1200000, /* 0xd2 */ |
| 0xc1300000, /* 0xd3 */ |
| 0xc1400000, /* 0xd4 */ |
| 0xc1500000, /* 0xd5 */ |
| 0xc1600000, /* 0xd6 */ |
| 0xc1700000, /* 0xd7 */ |
| 0xc1800000, /* 0xd8 */ |
| 0xc1900000, /* 0xd9 */ |
| 0xc1a00000, /* 0xda */ |
| 0xc1b00000, /* 0xdb */ |
| 0xc1c00000, /* 0xdc */ |
| 0xc1d00000, /* 0xdd */ |
| 0xc1e00000, /* 0xde */ |
| 0xc1f00000, /* 0xdf */ |
| 0xc2000000, /* 0xe0 */ |
| 0xc2100000, /* 0xe1 */ |
| 0xc2200000, /* 0xe2 */ |
| 0xc2300000, /* 0xe3 */ |
| 0xc2400000, /* 0xe4 */ |
| 0xc2500000, /* 0xe5 */ |
| 0xc2600000, /* 0xe6 */ |
| 0xc2700000, /* 0xe7 */ |
| 0xc2800000, /* 0xe8 */ |
| 0xc2900000, /* 0xe9 */ |
| 0xc2a00000, /* 0xea */ |
| 0xc2b00000, /* 0xeb */ |
| 0xc2c00000, /* 0xec */ |
| 0xc2d00000, /* 0xed */ |
| 0xc2e00000, /* 0xee */ |
| 0xc2f00000, /* 0xef */ |
| 0xc3000000, /* 0xf0 */ |
| 0xc3100000, /* 0xf1 */ |
| 0xc3200000, /* 0xf2 */ |
| 0xc3300000, /* 0xf3 */ |
| 0xc3400000, /* 0xf4 */ |
| 0xc3500000, /* 0xf5 */ |
| 0xc3600000, /* 0xf6 */ |
| 0xc3700000, /* 0xf7 */ |
| 0xc3800000, /* 0xf8 */ |
| 0xc3900000, /* 0xf9 */ |
| 0xc3a00000, /* 0xfa */ |
| 0xc3b00000, /* 0xfb */ |
| 0xc3c00000, /* 0xfc */ |
| 0xc3d00000, /* 0xfd */ |
| 0xc3e00000, /* 0xfe */ |
| 0xffc00000, /* 0xff */ |
| }; |
| |
| static const uint32_t e5m2_lut[256] = { |
| 0x0, /* 0x0 */ |
| 0x37800000, /* 0x1 */ |
| 0x38000000, /* 0x2 */ |
| 0x38400000, /* 0x3 */ |
| 0x38800000, /* 0x4 */ |
| 0x38a00000, /* 0x5 */ |
| 0x38c00000, /* 0x6 */ |
| 0x38e00000, /* 0x7 */ |
| 0x39000000, /* 0x8 */ |
| 0x39200000, /* 0x9 */ |
| 0x39400000, /* 0xa */ |
| 0x39600000, /* 0xb */ |
| 0x39800000, /* 0xc */ |
| 0x39a00000, /* 0xd */ |
| 0x39c00000, /* 0xe */ |
| 0x39e00000, /* 0xf */ |
| 0x3a000000, /* 0x10 */ |
| 0x3a200000, /* 0x11 */ |
| 0x3a400000, /* 0x12 */ |
| 0x3a600000, /* 0x13 */ |
| 0x3a800000, /* 0x14 */ |
| 0x3aa00000, /* 0x15 */ |
| 0x3ac00000, /* 0x16 */ |
| 0x3ae00000, /* 0x17 */ |
| 0x3b000000, /* 0x18 */ |
| 0x3b200000, /* 0x19 */ |
| 0x3b400000, /* 0x1a */ |
| 0x3b600000, /* 0x1b */ |
| 0x3b800000, /* 0x1c */ |
| 0x3ba00000, /* 0x1d */ |
| 0x3bc00000, /* 0x1e */ |
| 0x3be00000, /* 0x1f */ |
| 0x3c000000, /* 0x20 */ |
| 0x3c200000, /* 0x21 */ |
| 0x3c400000, /* 0x22 */ |
| 0x3c600000, /* 0x23 */ |
| 0x3c800000, /* 0x24 */ |
| 0x3ca00000, /* 0x25 */ |
| 0x3cc00000, /* 0x26 */ |
| 0x3ce00000, /* 0x27 */ |
| 0x3d000000, /* 0x28 */ |
| 0x3d200000, /* 0x29 */ |
| 0x3d400000, /* 0x2a */ |
| 0x3d600000, /* 0x2b */ |
| 0x3d800000, /* 0x2c */ |
| 0x3da00000, /* 0x2d */ |
| 0x3dc00000, /* 0x2e */ |
| 0x3de00000, /* 0x2f */ |
| 0x3e000000, /* 0x30 */ |
| 0x3e200000, /* 0x31 */ |
| 0x3e400000, /* 0x32 */ |
| 0x3e600000, /* 0x33 */ |
| 0x3e800000, /* 0x34 */ |
| 0x3ea00000, /* 0x35 */ |
| 0x3ec00000, /* 0x36 */ |
| 0x3ee00000, /* 0x37 */ |
| 0x3f000000, /* 0x38 */ |
| 0x3f200000, /* 0x39 */ |
| 0x3f400000, /* 0x3a */ |
| 0x3f600000, /* 0x3b */ |
| 0x3f800000, /* 0x3c */ |
| 0x3fa00000, /* 0x3d */ |
| 0x3fc00000, /* 0x3e */ |
| 0x3fe00000, /* 0x3f */ |
| 0x40000000, /* 0x40 */ |
| 0x40200000, /* 0x41 */ |
| 0x40400000, /* 0x42 */ |
| 0x40600000, /* 0x43 */ |
| 0x40800000, /* 0x44 */ |
| 0x40a00000, /* 0x45 */ |
| 0x40c00000, /* 0x46 */ |
| 0x40e00000, /* 0x47 */ |
| 0x41000000, /* 0x48 */ |
| 0x41200000, /* 0x49 */ |
| 0x41400000, /* 0x4a */ |
| 0x41600000, /* 0x4b */ |
| 0x41800000, /* 0x4c */ |
| 0x41a00000, /* 0x4d */ |
| 0x41c00000, /* 0x4e */ |
| 0x41e00000, /* 0x4f */ |
| 0x42000000, /* 0x50 */ |
| 0x42200000, /* 0x51 */ |
| 0x42400000, /* 0x52 */ |
| 0x42600000, /* 0x53 */ |
| 0x42800000, /* 0x54 */ |
| 0x42a00000, /* 0x55 */ |
| 0x42c00000, /* 0x56 */ |
| 0x42e00000, /* 0x57 */ |
| 0x43000000, /* 0x58 */ |
| 0x43200000, /* 0x59 */ |
| 0x43400000, /* 0x5a */ |
| 0x43600000, /* 0x5b */ |
| 0x43800000, /* 0x5c */ |
| 0x43a00000, /* 0x5d */ |
| 0x43c00000, /* 0x5e */ |
| 0x43e00000, /* 0x5f */ |
| 0x44000000, /* 0x60 */ |
| 0x44200000, /* 0x61 */ |
| 0x44400000, /* 0x62 */ |
| 0x44600000, /* 0x63 */ |
| 0x44800000, /* 0x64 */ |
| 0x44a00000, /* 0x65 */ |
| 0x44c00000, /* 0x66 */ |
| 0x44e00000, /* 0x67 */ |
| 0x45000000, /* 0x68 */ |
| 0x45200000, /* 0x69 */ |
| 0x45400000, /* 0x6a */ |
| 0x45600000, /* 0x6b */ |
| 0x45800000, /* 0x6c */ |
| 0x45a00000, /* 0x6d */ |
| 0x45c00000, /* 0x6e */ |
| 0x45e00000, /* 0x6f */ |
| 0x46000000, /* 0x70 */ |
| 0x46200000, /* 0x71 */ |
| 0x46400000, /* 0x72 */ |
| 0x46600000, /* 0x73 */ |
| 0x46800000, /* 0x74 */ |
| 0x46a00000, /* 0x75 */ |
| 0x46c00000, /* 0x76 */ |
| 0x46e00000, /* 0x77 */ |
| 0x47000000, /* 0x78 */ |
| 0x47200000, /* 0x79 */ |
| 0x47400000, /* 0x7a */ |
| 0x47600000, /* 0x7b */ |
| 0x7f800000, /* 0x7c */ |
| 0xffc00000, /* 0x7d */ |
| 0xffc00000, /* 0x7e */ |
| 0xffc00000, /* 0x7f */ |
| 0x80000000, /* 0x80 */ |
| 0xb7800000, /* 0x81 */ |
| 0xb8000000, /* 0x82 */ |
| 0xb8400000, /* 0x83 */ |
| 0xb8800000, /* 0x84 */ |
| 0xb8a00000, /* 0x85 */ |
| 0xb8c00000, /* 0x86 */ |
| 0xb8e00000, /* 0x87 */ |
| 0xb9000000, /* 0x88 */ |
| 0xb9200000, /* 0x89 */ |
| 0xb9400000, /* 0x8a */ |
| 0xb9600000, /* 0x8b */ |
| 0xb9800000, /* 0x8c */ |
| 0xb9a00000, /* 0x8d */ |
| 0xb9c00000, /* 0x8e */ |
| 0xb9e00000, /* 0x8f */ |
| 0xba000000, /* 0x90 */ |
| 0xba200000, /* 0x91 */ |
| 0xba400000, /* 0x92 */ |
| 0xba600000, /* 0x93 */ |
| 0xba800000, /* 0x94 */ |
| 0xbaa00000, /* 0x95 */ |
| 0xbac00000, /* 0x96 */ |
| 0xbae00000, /* 0x97 */ |
| 0xbb000000, /* 0x98 */ |
| 0xbb200000, /* 0x99 */ |
| 0xbb400000, /* 0x9a */ |
| 0xbb600000, /* 0x9b */ |
| 0xbb800000, /* 0x9c */ |
| 0xbba00000, /* 0x9d */ |
| 0xbbc00000, /* 0x9e */ |
| 0xbbe00000, /* 0x9f */ |
| 0xbc000000, /* 0xa0 */ |
| 0xbc200000, /* 0xa1 */ |
| 0xbc400000, /* 0xa2 */ |
| 0xbc600000, /* 0xa3 */ |
| 0xbc800000, /* 0xa4 */ |
| 0xbca00000, /* 0xa5 */ |
| 0xbcc00000, /* 0xa6 */ |
| 0xbce00000, /* 0xa7 */ |
| 0xbd000000, /* 0xa8 */ |
| 0xbd200000, /* 0xa9 */ |
| 0xbd400000, /* 0xaa */ |
| 0xbd600000, /* 0xab */ |
| 0xbd800000, /* 0xac */ |
| 0xbda00000, /* 0xad */ |
| 0xbdc00000, /* 0xae */ |
| 0xbde00000, /* 0xaf */ |
| 0xbe000000, /* 0xb0 */ |
| 0xbe200000, /* 0xb1 */ |
| 0xbe400000, /* 0xb2 */ |
| 0xbe600000, /* 0xb3 */ |
| 0xbe800000, /* 0xb4 */ |
| 0xbea00000, /* 0xb5 */ |
| 0xbec00000, /* 0xb6 */ |
| 0xbee00000, /* 0xb7 */ |
| 0xbf000000, /* 0xb8 */ |
| 0xbf200000, /* 0xb9 */ |
| 0xbf400000, /* 0xba */ |
| 0xbf600000, /* 0xbb */ |
| 0xbf800000, /* 0xbc */ |
| 0xbfa00000, /* 0xbd */ |
| 0xbfc00000, /* 0xbe */ |
| 0xbfe00000, /* 0xbf */ |
| 0xc0000000, /* 0xc0 */ |
| 0xc0200000, /* 0xc1 */ |
| 0xc0400000, /* 0xc2 */ |
| 0xc0600000, /* 0xc3 */ |
| 0xc0800000, /* 0xc4 */ |
| 0xc0a00000, /* 0xc5 */ |
| 0xc0c00000, /* 0xc6 */ |
| 0xc0e00000, /* 0xc7 */ |
| 0xc1000000, /* 0xc8 */ |
| 0xc1200000, /* 0xc9 */ |
| 0xc1400000, /* 0xca */ |
| 0xc1600000, /* 0xcb */ |
| 0xc1800000, /* 0xcc */ |
| 0xc1a00000, /* 0xcd */ |
| 0xc1c00000, /* 0xce */ |
| 0xc1e00000, /* 0xcf */ |
| 0xc2000000, /* 0xd0 */ |
| 0xc2200000, /* 0xd1 */ |
| 0xc2400000, /* 0xd2 */ |
| 0xc2600000, /* 0xd3 */ |
| 0xc2800000, /* 0xd4 */ |
| 0xc2a00000, /* 0xd5 */ |
| 0xc2c00000, /* 0xd6 */ |
| 0xc2e00000, /* 0xd7 */ |
| 0xc3000000, /* 0xd8 */ |
| 0xc3200000, /* 0xd9 */ |
| 0xc3400000, /* 0xda */ |
| 0xc3600000, /* 0xdb */ |
| 0xc3800000, /* 0xdc */ |
| 0xc3a00000, /* 0xdd */ |
| 0xc3c00000, /* 0xde */ |
| 0xc3e00000, /* 0xdf */ |
| 0xc4000000, /* 0xe0 */ |
| 0xc4200000, /* 0xe1 */ |
| 0xc4400000, /* 0xe2 */ |
| 0xc4600000, /* 0xe3 */ |
| 0xc4800000, /* 0xe4 */ |
| 0xc4a00000, /* 0xe5 */ |
| 0xc4c00000, /* 0xe6 */ |
| 0xc4e00000, /* 0xe7 */ |
| 0xc5000000, /* 0xe8 */ |
| 0xc5200000, /* 0xe9 */ |
| 0xc5400000, /* 0xea */ |
| 0xc5600000, /* 0xeb */ |
| 0xc5800000, /* 0xec */ |
| 0xc5a00000, /* 0xed */ |
| 0xc5c00000, /* 0xee */ |
| 0xc5e00000, /* 0xef */ |
| 0xc6000000, /* 0xf0 */ |
| 0xc6200000, /* 0xf1 */ |
| 0xc6400000, /* 0xf2 */ |
| 0xc6600000, /* 0xf3 */ |
| 0xc6800000, /* 0xf4 */ |
| 0xc6a00000, /* 0xf5 */ |
| 0xc6c00000, /* 0xf6 */ |
| 0xc6e00000, /* 0xf7 */ |
| 0xc7000000, /* 0xf8 */ |
| 0xc7200000, /* 0xf9 */ |
| 0xc7400000, /* 0xfa */ |
| 0xc7600000, /* 0xfb */ |
| 0xff800000, /* 0xfc */ |
| 0xffc00000, /* 0xfd */ |
| 0xffc00000, /* 0xfe */ |
| 0xffc00000, /* 0xff */ |
| }; |
| |
| TEST(float8_test, e4m3fn_to_float) |
| { |
| for (unsigned i = 0; i < 256; i++) { |
| EXPECT_EQ(fui(_mesa_e4m3fn_to_float(i)), e4m3fn_lut[i]); |
| } |
| } |
| |
| TEST(float8_test, e5m2_to_float) |
| { |
| for (unsigned i = 0; i < 256; i++) { |
| EXPECT_EQ(fui(_mesa_e5m2_to_float(i)), e5m2_lut[i]); |
| } |
| } |
| |
| TEST(float8_test, float_to_e4m3fn_exact) |
| { |
| for (unsigned i = 0; i < 256; i++) { |
| EXPECT_EQ(fui(_mesa_e4m3fn_to_float(_mesa_float_to_e4m3fn(uif(e4m3fn_lut[i])))), e4m3fn_lut[i]); |
| } |
| } |
| |
| TEST(float8_test, float_to_e5m2_exact) |
| { |
| for (unsigned i = 0; i < 256; i++) { |
| EXPECT_EQ(fui(_mesa_e5m2_to_float(_mesa_float_to_e5m2(uif(e5m2_lut[i])))), e5m2_lut[i]); |
| } |
| } |
| |
| TEST(float8_test, float_to_e4m3fn_rtne) |
| { |
| /* underflow border */ |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x3A800000)), 0); |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x3A800001)), 1); |
| |
| /* rounding up border, denorm */ |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x3b3fffff)), 1); |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x3b400000)), 2); |
| |
| /* rounding down border, denorm */ |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x3ba00000)), 2); |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x3ba00001)), 3); |
| |
| /* rounding up border, normal */ |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x4017ffff)), 0x41); |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x40180000)), 0x42); |
| |
| /* rounding down border, normal */ |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x40080000)), 0x40); |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x40080001)), 0x41); |
| |
| /* overflow border */ |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x43e80000)), 0x7e); |
| EXPECT_EQ(_mesa_float_to_e4m3fn(uif(0x43e80001)), 0xff); |
| } |
| |
| TEST(float8_test, float_to_e5m2_rtne) |
| { |
| /* underflow border */ |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x37000000)), 0); |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x37000001)), 1); |
| |
| /* rounding up border, denorm */ |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x37bfffff)), 1); |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x37c00000)), 2); |
| |
| /* rounding down border, denorm */ |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x38200000)), 2); |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x38200001)), 3); |
| |
| /* rounding up border, normal */ |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x402fffff)), 0x41); |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x40300000)), 0x42); |
| |
| /* rounding down border, normal */ |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x40100000)), 0x40); |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x40100001)), 0x41); |
| |
| /* overflow border */ |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x476fffff)), 0x7b); |
| EXPECT_EQ(_mesa_float_to_e5m2(uif(0x47700000)), 0x7c); |
| } |
