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 30772-246cd0a587) Lines: 1467 1530 95.9 % Date: 2026-03-29 09:27:34 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296301
RgX_gtofp_bit	7048039
RgX_normalize1	35705
X2XP1	5990691
ZX_Uspensky	1313914
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48565
ZX_rescale2prim	2233828
ZX_sturm	6395
ZX_sturm_i	123054
ZX_sturm_irred	116660
ZX_sturmpart	1128334
ZX_to_ZiX	16490387
ZiX_sqr	99236641
_gen_nored	11210046
_gen_one	14473453
_gen_zero	325984
_intervalcmp	0
_mp_add	24664709
_mp_cmul	34779759
_mp_mul	4374484
_mp_sqr	6298444
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537473
abs_update	8020990
abs_update_r	780141
all_roots	536366
append_clone	1616168
bkeval_single_power	5235831
check_ab	1178961
checkbound	2355052
checkvalidpol	267214
clean_roots	536411
cleanroots	231763
cmp_complex_appr	2241509
conformal_basecase	1406441
conformal_mapping	468776
conformal_pol	1406562
dblexp	6562501
dbllog2	304092303
dft	503319
dual_modulus	1014485
eval_rel_pol	13168549
fft	14194026
fft2	7462
findpower	41031048
fix_roots	537469
fix_roots1	398793
fujiwara_bound	2271987
fujiwara_bound_real	1406979
graeffe	49613299
homothetie	1613570
homothetie2n	9979096
homothetie_gauss	36566078
ind_maxlog2	904356
initdft	998244
isexactpol	240103
isexactscalar	934017
isreal	963701
isvalidcoeff	1230445
logmax_modulus	4458591
logmin_modulus	1617670
logmodulus	608218
logpre_modulus	608219
logradius	494924
lower_bound	41030982
mydbllog2i	226910026
mydbllog2r	57611086
mydbllogr	9565405
mygprec	63864914
mygprec_absolute	4344263
mygprec_special	537475
mygprecrc	215569588
mygprecrc_special	2181421
myshiftic	136164686
myshiftrc	35576923
newton_polygon	5520753
optimize_split	494927
parameters	494926
pol_to_gaussint	17627164
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166702
quicktofp	6981170
realroots	50627
refine_F	503321
refine_H	2464574
root_error	1914426
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297367
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495294
split_0_1	469143
split_0_2	469144
split_1	468773
split_2	494924
split_complete	1528062
split_fromU	494927
split_pols	166694
splitcauchy	166708
splitpoleval	5236429
tocomplex	1215881
update_radius	494926
usp	1126085

Generated by: LCOV version 1.16