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: 2026-03-28 09:27:57 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296304
RgX_gtofp_bit	7048116
RgX_normalize1	35702
X2XP1	5990624
ZX_Uspensky	1313875
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48573
ZX_rescale2prim	2233797
ZX_sturm	6395
ZX_sturm_i	123068
ZX_sturm_irred	116673
ZX_sturmpart	1128281
ZX_to_ZiX	16490859
ZiX_sqr	99235234
_gen_nored	11211521
_gen_one	14473747
_gen_zero	326034
_intervalcmp	0
_mp_add	24667156
_mp_cmul	34786411
_mp_mul	4374706
_mp_sqr	6298785
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	537467
abs_update	8021467
abs_update_r	780137
all_roots	536362
append_clone	1616168
bkeval_single_power	5236452
check_ab	1178908
checkbound	2354948
checkvalidpol	267211
clean_roots	536409
cleanroots	231763
cmp_complex_appr	2241493
conformal_basecase	1406441
conformal_mapping	468773
conformal_pol	1406561
dblexp	6562544
dbllog2	304090566
dft	503315
dual_modulus	1014480
eval_rel_pol	13168327
fft	14194705
fft2	7462
findpower	41029912
fix_roots	537468
fix_roots1	398786
fujiwara_bound	2271971
fujiwara_bound_real	1406931
graeffe	49610164
homothetie	1613568
homothetie2n	9979129
homothetie_gauss	36565170
ind_maxlog2	904354
initdft	998237
isexactpol	240103
isexactscalar	934017
isreal	963698
isvalidcoeff	1230434
logmax_modulus	4458551
logmin_modulus	1617657
logmodulus	608222
logpre_modulus	608220
logradius	494920
lower_bound	41031008
mydbllog2i	226907546
mydbllog2r	57612787
mydbllogr	9565753
mygprec	63864546
mygprec_absolute	4344193
mygprec_special	537473
mygprecrc	215579245
mygprecrc_special	2181410
myshiftic	136160825
myshiftrc	35577281
newton_polygon	5520807
optimize_split	494924
parameters	494922
pol_to_gaussint	17627168
polgraeffe	14
polmod_to_embed	84
polrootsbound	27101
polrootsbound_i	27095
polsolve	166709
quicktofp	6981276
realroots	50627
refine_F	503314
refine_H	2464595
root_error	1914412
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297351
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495294
split_0_1	469145
split_0_2	469145
split_1	468774
split_2	494923
split_complete	1528054
split_fromU	494924
split_pols	166704
splitcauchy	166712
splitpoleval	5236727
tocomplex	1215886
update_radius	494924
usp	1126076

Generated by: LCOV version 1.16