Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30571-c0dfe82732) Lines: 1467 1530 95.9 % Date: 2025-12-06 09:22:10 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296483
RgX_gtofp_bit	7031677
RgX_normalize1	35908
X2XP1	5990168
ZX_Uspensky	1313836
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5390
ZX_realroots_irred	48655
ZX_rescale2prim	2233683
ZX_sturm	6395
ZX_sturm_i	123200
ZX_sturm_irred	116805
ZX_sturmpart	1128169
ZX_to_ZiX	16456291
ZiX_sqr	99028382
_gen_nored	11202655
_gen_one	14472979
_gen_zero	326148
_intervalcmp	0
_mp_add	24661581
_mp_cmul	34765469
_mp_mul	4374438
_mp_sqr	6298268
_mp_sub	0
_sqrtnr	22710
a_posteriori_errors	537284
abs_update	8005039
abs_update_r	778676
all_roots	536185
append_clone	1614301
bkeval_single_power	5235845
check_ab	1178796
checkbound	2354722
checkvalidpol	267067
clean_roots	536232
cleanroots	231763
cmp_complex_appr	2238682
conformal_basecase	1403894
conformal_mapping	467925
conformal_pol	1404013
dblexp	6549089
dbllog2	302104992
dft	502369
dual_modulus	1012452
eval_rel_pol	13138122
fft	14159216
fft2	7462
findpower	40955286
fix_roots	537283
fix_roots1	398483
fujiwara_bound	2271875
fujiwara_bound_real	1406881
graeffe	49507702
homothetie	1610099
homothetie2n	9957869
homothetie_gauss	36496519
ind_maxlog2	902666
initdft	996351
isexactpol	239753
isexactscalar	931714
isreal	961909
isvalidcoeff	1230270
logmax_modulus	4450968
logmin_modulus	1614798
logmodulus	606765
logpre_modulus	606761
logradius	493972
lower_bound	40955296
mydbllog2i	226431916
mydbllog2r	56183662
mydbllogr	9546566
mygprec	63758571
mygprec_absolute	4340514
mygprec_special	537294
mygprecrc	215189441
mygprecrc_special	2179371
myshiftic	135819835
myshiftrc	35507718
newton_polygon	5507262
optimize_split	493982
parameters	493980
pol_to_gaussint	17589031
polgraeffe	14
polmod_to_embed	84
polrootsbound	27307
polrootsbound_i	27300
polsolve	166722
quicktofp	6979366
realroots	50627
refine_F	502360
refine_H	2460486
root_error	1912754
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289401
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494341
split_0_1	468288
split_0_2	468288
split_1	467927
split_2	493980
split_complete	1525977
split_fromU	493982
split_pols	166727
splitcauchy	166731
splitpoleval	5235594
tocomplex	1214157
update_radius	493978
usp	1126015

Generated by: LCOV version 1.16